The Postal Service introduces new service standards: What it means for your ZIP code
October 22, 2024
The Postal Service has filed a proposal with the Postal Regulatory Commission to revise the service standards for First Class Mail and other market-dominant products.
Under a new initiative called Regional Transportation Optimization (RTO), the mail at any post office more than 50 miles from one of the country’s 59 Regional Processing and Distribution Centers (RPDCs) will no longer be collected at the end of the day. It will instead be collected the next morning, when the mail is dropped off at the post office for carrier delivery. In most cases, that will add a day to the current service standard.
More than 24,300 of the country's 33,700 post offices will be subject to the RTO initiative. Almost half the country's population live in areas that will be impacted by RTO. Most of those areas are rural, as discussed in this previous post.
Under the proposal, delivery times for presort mail, as well as single-piece mail sent from within 50 miles of a RPDC, will remain the same or, in some cases, improve by a day.
The Postal Service will eventually make available an online lookup tool that allows one to find the service standard for any origin ZIP code to destination ZIP code. That may be months away, however. In the meantime, one can find the proposed service standard for First Class mail for any 5-digit ZIP code and 3-digit destination using this Service Standard Finder. It's definitely not official, but it's based on data shared by the USPS with the PRC a couple of weeks ago.
Finding the service standard takes two steps. First, enter the origin 5-digit ZIP in the search box (and hit "enter" or "return" on your computer). The Finder will indicate if it's an RTO office or not, and it will provide the first three digits for the RPDC.
Second, enter the RPDC ZIP3 and the 3-digit ZIP for the destination in the form 000-000. (The Finder will only show results if the first ZIP in the pair is for an RPDC; don't use the ZIP3 for the origin post office.)
The Finder will show the service standard for both non-RTO post offices and RTO offices. The non-RTO standard applies to all presort First Class Mail sent within the RPDC region and to single-piece sent from within 50 miles of an RPDC. The RTO standard applies to all single-piece mail sent from outside 50 miles of the RPDC.
Note that there are some RTO post offices for which local mail will take 2 days rather than 3, as explained below (see Exceptions).
Service Standard Finder
| ZIP | RTO | RPDC |
|---|---|---|
| 01001 | NO | 011 |
| oRPDC-dZIP3 | Current SS | New SS RTO NO | New SS RTO YES |
|---|---|---|---|
| 871-813 | 2 | 2 | 3 |
Mapping service standards
To assist mailers, the Postal Service provides maps on its Postal Pro website showing the service standard for each 3-digit ZIP code. The Postal Service will eventually provide similar maps for the new service standards being proposed. In the meantime, here's a set of maps for mail originating in Pasco, Washington, ZIP 99301.
The first map (Pre-DFA) shows the service standards from before October 2021. At the time, there was a 2-day standard for local mail, and the rest of the country fell under a 3-day standard. In October 2021, the Postal Service revised the standards — one of the first initiatives of the Delivering for America plan — and most of the 3-day band became 4-day and 5-day, as seen in the "Current" map.
Pasco is 141 miles from the RPDC in Spokane, so it falls under the RTO initiative. In the map for presort mail, the bands for 2, 3 and 4-day mail will each expand, and the 5-day band will become smaller. For single-piece mail, the 2-day band will become 3, the 3-day will become 4, and the 4-day will become 5.
The presort map also applies to all the post offices within 50 miles of the Seattle RPDC (non-RTO). The single-piece map applies to all the offices outside of the 50 mile radius (RTO).
Another way to view the scope of the proposed changes is by examining the distribution of origin-destination (OD) pairs by service standards. This chart shows the percent of OD pairs for each service standard. Before DFA, over 90 percent of the OD pairs were subject to a 3-day standard. With DFA, the number of 2-day pairs decreased, and about half of the 3-day pairs became 4-day and 5-day.
Under the proposal, the percent of 2-day pairs will increase for non-RTO offices, and the number of 5-day pairs will decrease. For the RTO offices, on the other hand, over 90 percent of the OD pairs will be subject to a 4-day and 5-day standard.
How the service standards are determined
The new service standards are based on three legs — collection, network, and delivery.
The key factor for the collection leg — post office to Local Processing Center — is whether or not the originating post office is subject to RTO according to the 50-mile radius.
The Postal Service has shared a list of ZIP codes, distances between post offices and RPDCs, and whether or not the post office is RTO in library reference USPS-LR-N2024-1-1.
This map from a USPS presentation shows the non-RTO areas in yellow and the RTO areas in blue. Interactive versions of this map are available here.
For presort mail and non-RTO single-piece mail, the calculation adds 0 days to the standard. For RTO single-piece, the calculation adds 1 day to the standard.
The network leg includes the origin RPDC (oRPDC), the destination RPDC (dRPDC), and the destination Local Processing Center (dLPC). The service standard for the network leg is 2 to 5 days, depending on the length of the trip from oRPDC to dLPC.
For Leg 3, from dLPC to post office, no additional days are added, since the mail leaves the LPC on the same day it’s delivered.
The service standard is the sum of the days for Leg 1 and Leg 2, with a maximum of 5 days. Here's a diagram of the three legs from the Postal Service's testimony for the advisory opinion.
While most single-piece mail originating in RTO offices will slow down by a day, some of the presort and non-RTO mail will see an upgrade. That's because the travel time between oRPDC and dLPC will speed up since processing centers won't have to wait for the collection mail to arrive from all those post offices more than 50 miles from the RPDC.
| Service Standard | Current Transit Hours | Proposed Transit Hours | Current Distance Miles | Proposed Distance Miles |
|---|---|---|---|---|
| 2 Day | 3 or less | 7 or less | 139 or less | 324 or less |
| 3 Day | 3 - 20 | 7 - 24 | 140 - 930 | 325 - 1,116 |
| 4 Day | 20 - 41 | 24 - 45 | 931 - 1,907 | 1,117 - 2,093 |
| 5 Day | 41 or more | 45 or more | 1,909 or more | 2,093 or more |
RPDCs and LPCs
One of the key elements of the Postal Service's transformation of the network is the creation of RPDC regions. The RPDCs handle all the outgoing mail for the region (inter-RPDC) and usually the mail that's staying within the region (turnaround). The Local Processing Centers handle the mail from the RPDC that's going out to local post offices. In a few cases, however, mail will stay within the LPC service area and not go to the RPDC for processing.
Each RPDC region, then, consists of one RPDC and one or more LPCs. There are 59 RPDCs and about 197 LPCs. In 26 cases, the LPC is co-located with the RPDC in the same facility. The Postal Service has shared with the PRC a list of the RPDCs and LPCs in library reference USPS-LR-N2024-1-2. The following list adds the addresses.
| RPDC | LPC | TYPE | ADDRESS | CITY | STATE | ZIP | RPDC-LPC MILES |
|---|---|---|---|---|---|---|---|
| ALBUQUERQUE NM P&DC | ALBUQUERQUE NM P&DC | RPDC/LPC | 1135 BROADWAY BLVD NE | ALBUQUERQUE | NM | 87101 | 0 |
| ALBUQUERQUE NM P&DC | EL PASO TX P&DC | LPC | 8401 BOEING DR | EL PASO | TX | 79910 | 273.6 |
| AMARILLO TX P&DC | AMARILLO TX P&DC | RPDC/LPC | 2301 ROSS ST | AMARILLO | TX | 79120 | 0 |
| AMARILLO TX P&DC | LUBBOCK TX P&DC | LPC | 1515 CRICKETS AVE | LUBBOCK | TX | 79402 | 123.3 |
| AMARILLO TX P&DC | MIDLAND TX P&DC | LPC | 10000 LOOP 40 | MIDLAND | TX | 79711 | 251.1 |
| Atlanta Palmetto | RPDC | 600 PALMETTO LOGISTICS PARKWAY | PALMETTO | GA | 30268 | ||
| Atlanta Palmetto | ATLANTA GA P&DC | LPC | 3900 CROWN RD SW | ATLANTA | GA | 30304 | 19.7 |
| Atlanta Palmetto | AUGUSTA GA P&DC | LPC | 525 8TH ST | AUGUSTA | GA | 30901 | 168.4 |
| Atlanta Palmetto | MACON GA P&DC | LPC | 451 COLLEGE ST | MACON | GA | 31213 | 92.9 |
| Atlanta Palmetto | NORTH METRO GA P&DC | LPC | 1605 BOGGS RD | DULUTH | GA | 30096 | 53.3 |
| BATON ROUGE LA P&DC | BATON ROUGE LA P&DC | RPDC/LPC | 8101 BLUEBONNET BLVD | BATON ROUGE | LA | 70810 | 0 |
| BATON ROUGE LA P&DC | JACKSON MS P&DC | LPC | 401 E SOUTH ST | JACKSON | MS | 39201 | 171.7 |
| BATON ROUGE LA P&DC | LAFAYETTE LA P&DC | LPC | 1105 MOSS ST | LAFAYETTE | LA | 70501 | 64.2 |
| BATON ROUGE LA P&DC | NEW ORLEANS LA P&DC | LPC | 701 LOYOLA AVE | NEW ORLEANS | LA | 70113 | 74.7 |
| BETHPAGE NY P&DC | RPDC | 288 GRUMMAN RD W | BETHPAGE | NY | 11714 | ||
| BETHPAGE NY P&DC | BROOKLYN NY P&DC | LPC | 1050 FORBELL ST RM 2005 | BROOKLYN | NY | 11256 | 34.7 |
| BETHPAGE NY P&DC | MID-ISLAND NY P&DC | LPC | 160 DURYEA RD | MELVILLE | NY | 11747 | 9.8 |
| BETHPAGE NY P&DC | WEST NASSAU NY P&DC | LPC | 830 STEWART AVE | GARDEN CITY | NY | 11599 | 9 |
| BILLINGS MT P&DC | BILLINGS MT P&DC | RPDC/LPC | 841 S 26TH ST | BILLINGS | MT | 59101 | 0 |
| BILLINGS MT P&DC | CASPER WY MPF | LPC | 411 N FOREST DR | CASPER | WY | 82609 | 278.5 |
| BILLINGS MT P&DC | GREAT FALLS MT P&DF | LPC | 1409 14TH ST SW | GREAT FALLS | MT | 59404 | 226.2 |
| BILLINGS MT P&DC | RAPID CITY SD MPF | LPC | 500 EAST BLVD | RAPID CITY | SD | 57701 | 373.6 |
| BOISE ID P&DC | BOISE ID P&DC | RPDC/LPC | 2201 S COLE RD | BOISE | ID | 83708 | 0 |
| BOISE ID P&DC | POCATELLO ID P&DF | LPC | 1750 FLANDRO DR | POCATELLO | ID | 83202 | 234.1 |
| BOSTON MA P&DC | BOSTON MA P&DC | RPDC/LPC | 25 DORCHESTER AVE RM 4025B | BOSTON | MA | 02205 | 0 |
| BOSTON MA P&DC | BROCKTON MA P&DC | LPC | 225 LIBERTY ST RM 234 | BROCKTON | MA | 02301 | 24 |
| BOSTON MA P&DC | MANCHESTER NH P&DC | LPC | 955 GOFFS FALLS RD STE 997 | MANCHESTER | NH | 03103 | 51.5 |
| BOSTON MA P&DC | PROVIDENCE RI P&DC | LPC | 24 CORLISS ST REAR DOCK | PROVIDENCE | RI | 02904 | 48.2 |
| Brookville Indy | Brookville Indy | RPDC/LPC | 5565 BROOKVILLE RD | INDIANAPOLIS | IN | 46219 | 0 |
| Brookville Indy | FT WAYNE IN P&DC | LPC | 1501 S CLINTON ST | FORT WAYNE | IN | 46802 | 131.1 |
| CHICAGO NDC | RPDC | 7500 ROOSEVELT RD | FOREST PARK | IL | 60130 | ||
| CHICAGO NDC | CHAMPAIGN IL P&DC | LPC | 2001 N MATTIS AVE | CHAMPAIGN | IL | 61821 | 137.2 |
| CHICAGO NDC | CHICAGO IL P&DC | LPC | 433 W HARRISON ST STE 3012A | CHICAGO | IL | 60699 | 10.1 |
| CHICAGO NDC | GARY IN P&DC | LPC | 1499 MARTIN LUTHER KING DR | GARY | IN | 46401 | 42.9 |
| CHICAGO NDC | SOUTH SUBURBAN IL P&DC | LPC | 6801 W 73RD ST | BEDFORD PARK | IL | 60499 | 8.8 |
| CHICAGO NDC | PEORIA IL P&DC | LPC | 95 STATE ST | PEORIA | IL | 61601 | 161.1 |
| CHICAGO NDC | FOX VALLEY IL P&DC | LPC | 3900 GABRIELLE LN | FOX VALLEY | IL | 60599 | 27.9 |
| CHICAGO NDC | PALATINE IL P&DC | LPC | 1300 E NORTHWEST HWY | PALATINE | IL | 60095 | 27 |
| CHICAGO NDC | CAROL STREAM IL P&DC | LPC | 500 FULLERTON AVE | CAROL STREAM | IL | 60199 | 21.4 |
| CINCINNATI NDC | RPDC | 3055 CRESCENTVILLE RD | CINCINNATI | OH | 45235 | ||
| CINCINNATI NDC | CINCINNATI OH P&DC | LPC | 1591 DALTON AVE | CINCINNATI | OH | 45234 | 19.5 |
| CINCINNATI NDC | COLUMBUS OH P&DC | LPC | 2323 CITYGATE DR | COLUMBUS | OH | 43218 | 111.2 |
| CINCINNATI NDC | DAYTON OH P&DC | LPC | 1111 E 5TH ST | DAYTON | OH | 45401 | 40.5 |
| CLEVELAND OH PSA | RPDC | 5520 CHEVROLET BLVD STE 100 | CLEVELAND | OH | 44130 | ||
| CLEVELAND OH PSA | CLEVELAND OH P&DC | LPC | 2400 ORANGE AVE RM 30 | CLEVELAND | OH | 44101 | 13.3 |
| CLEVELAND OH PSA | AKRON OH P&DC | LPC | 675 WOLF LEDGES PKWY RM 114 | AKRON | OH | 44309 | 39.4 |
| CLEVELAND OH PSA | YOUNGSTOWN OH P&DF | LPC | 99 S WALNUT ST RM 289 | YOUNGSTOWN | OH | 44501 | 75.9 |
| COLUMBIA SC P&DC | COLUMBIA SC P&DC | RPDC/LPC | 2001 DIXIANA RD | COLUMBIA | SC | 29292 | 0 |
| COLUMBIA SC P&DC | CHARLESTON SC P&DC | LPC | 7075 CROSS COUNTY RD | NORTH CHARLESTON | SC | 29418 | 99.4 |
| Core 5 at Middleton | RPDC | 3327 E. Harrisburg Pike | Middletown | PA | 17057 | ||
| Core 5 at Middleton | HARRISBURG PA P&DC | LPC | 1425 CROOKED HILL RD | HARRISBURG | PA | 17107 | 15.1 |
| Core 5 at Middleton | LEHIGH VALLEY PA P&DC | LPC | 17 S COMMERCE WAY | BETHLEHEM | PA | 18017 | 97.1 |
| Core 5 at Middleton | SCRANTON PA P&DC | LPC | 2800 STAFFORD AVE | SCRANTON | PA | 18505 | 126.3 |
| DALLAS NDC | RPDC | 2400 DALLAS FT WORTH TPKE | DALLAS | TX | 75398 | ||
| DALLAS NDC | ABILENE TX P&DF | LPC | 1020 E OVERLAND TRL | ABILENE | TX | 79601 | 182.8 |
| DALLAS NDC | DALLAS TX P&DC | LPC | 401 TOM LANDRY HWY | DALLAS | TX | 75260 | 3.3 |
| DALLAS NDC | FT WORTH TX P&DC | LPC | 4600 MARK IV PKWY | FORT WORTH | TX | 76161 | 33.9 |
| DALLAS NDC | NORTH TEXAS TX P&DC | LPC | 951 W BETHEL RD | COPPELL | TX | 75099 | 21.8 |
| DALLAS NDC | SHREVEPORT LA P&DC | LPC | 2400 TEXAS AVE | SHREVEPORT | LA | 71102 | 188.3 |
| DENVER NDC | RPDC | 7755 E 56TH AVE | DENVER | CO | 80266 | ||
| DENVER NDC | CHEYENNE WY P&DC | LPC | 4800 CONVERSE AVE | CHEYENNE | WY | 82009 | 106.2 |
| DENVER NDC | COLORADO SPRINGS CO P&DC | LPC | 3655 E FOUNTAIN BLVD | COLORADO SPRINGS | CO | 80910 | 79.3 |
| DENVER NDC | DENVER CO P&DC | LPC | 7540 E 53RD PL | DENVER | CO | 80266 | 7.7 |
| DENVER NDC | GRAND JUNCTION CO MPF | LPC | 602 BURKEY ST | GRAND JUNCTION | CO | 81505 | 255.8 |
| DENVER NDC | NORTH PLATTE NE MPF | LPC | 1302 INDUSTRIAL AVE | NORTH PLATTE | NE | 69101 | 262.2 |
| DES MOINES NDC | RPDC | 4000 109TH ST | DES MOINES | IA | 50395 | ||
| DES MOINES NDC | CEDAR RAPIDS IA P&DC | LPC | 615 6TH AVE SE | CEDAR RAPIDS | IA | 52401 | 134.2 |
| DES MOINES NDC | DES MOINES IA P&DC | LPC | 1165 2ND AVE | DES MOINES | IA | 50318 | 12.3 |
| DES MOINES NDC | QUAD CITIES IL P&DC | LPC | 7700 68TH ST | MILAN | IL | 61264 | 183.7 |
| DES MOINES NDC | WATERLOO IA P&DF | LPC | 300 SYCAMORE ST | WATERLOO | IA | 50701 | 133.3 |
| DETROIT NDC | RPDC | 17500 OAKWOOD BLVD | ALLEN PARK | MI | 48101 | ||
| DETROIT NDC | DETROIT MI P&DC | LPC | 1401 W FORT ST RM 1022 | DETROIT | MI | 48233 | 12.2 |
| DETROIT NDC | MICHIGAN METROPLEX MI P&DC | LPC | 711 N GLENWOOD AVE | PONTIAC | MI | 48340 | 29.9 |
| DETROIT NDC | TOLEDO OH P&DF | LPC | 435 S SAINT CLAIR ST | TOLEDO | OH | 43601 | 53.9 |
| FARGO ND P&DF | FARGO ND P&DF | RPDC/LPC | 657 2ND AVE N RM 104 | FARGO | ND | 58102 | 0 |
| FARGO ND P&DF | BISMARCK ND P&DF | LPC | 2220 E BISMARCK EXPY RM 212 | BISMARCK | ND | 58504 | 192.8 |
| FARGO ND P&DF | CENTRAL DAKOTA P&DF | LPC | 355 15TH ST NW | HURON | SD | 57399 | 238.3 |
| FARGO ND P&DF | GRAND FORKS ND MPF | LPC | 2501 28TH AVE S | GRAND FORKS | ND | 58201 | 76.3 |
| Gastonia Scalybark | RPDC | 524 SCALYBARK RD | GASTONIA | NC | 28054 | ||
| Gastonia Scalybark | GREENVILLE SC P&DC | LPC | 204 FAIRFOREST WAY | GREENVILLE | SC | 29607 | 80.2 |
| Gastonia Scalybark | JOHNSON CITY TN P&DC | LPC | 530 E MAIN ST | JOHNSON CITY | TN | 37601 | 130.2 |
| Gastonia Scalybark | MID CAROLINA NC P&DC | LPC | 1820 W POINTE DR STE A | CHARLOTTE | NC | 28214 | 10.6 |
| GRAND RAPIDS MI P&DC | GRAND RAPIDS MI P&DC | RPDC/LPC | 225 MICHIGAN ST NW | GRAND RAPIDS | MI | 49501 | 0 |
| GRAND RAPIDS MI P&DC | LANSING MI P&DC | LPC | 4800 COLLINS RD | LANSING | MI | 48924 | 74.1 |
| GRAND RAPIDS MI P&DC | SOUTH BEND IN P&DC | LPC | 424 S MICHIGAN ST | SOUTH BEND | IN | 46601 | 117.7 |
| GRAND RAPIDS MI P&DC | TRAVERSE CITY MI P&DC | LPC | 1801 GARFIELD RD N | TRAVERSE CITY | MI | 49696 | 146.2 |
| GREEN BAY WI P&DC | GREEN BAY WI P&DC | RPDC/LPC | 300 PACKERLAND DR | GREEN BAY | WI | 54303 | 0 |
| GREEN BAY WI P&DC | KINGSFORD MI MPF | LPC | 700 W BREITUNG AVE | KINGSFORD | MI | 49802 | 104.6 |
| GREENSBORO NDC | RPDC | 3701 W WENDOVER AVE | GREENSBORO | NC | 27495 | ||
| GREENSBORO NDC | FAYETTEVILLE NC P&DC | LPC | 301 GREEN ST STE 200 | FAYETTEVILLE | NC | 28301 | 102 |
| GREENSBORO NDC | GREENSBORO NC P&DC | LPC | 1120 PLEASANT RIDGE RD | GREENSBORO | NC | 27498 | 8.3 |
| GREENSBORO NDC | RALEIGH NC P&DC | LPC | 1 FLORETTA PL | RALEIGH | NC | 27676 | 72 |
| GREENSBORO NDC | ROANOKE VA P&DC | LPC | 419 RUTHERFORD AVE NE | ROANOKE | VA | 24022 | 104.5 |
| JACKSONVILLE NDC | RPDC | 7415 COMMONWEALTH AVE | JACKSONVILLE | FL | 32099 | ||
| JACKSONVILLE NDC | JACKSONVILLE FL P&DC | LPC | 1100 KINGS RD | JACKSONVILLE | FL | 32203 | 9.8 |
| JACKSONVILLE NDC | TALLAHASSE FL P&DC | LPC | 2800 S ADAMS ST | TALLAHASSEE | FL | 32301 | 160.9 |
| KANSAS CITY NDC | RPDC | 4900 SPEAKER RD | KANSAS CITY | KS | 66106 | ||
| KANSAS CITY NDC | KANSAS CITY MO P&DC | LPC | 1700 CLEVELAND AVE | KANSAS CITY | MO | 64121 | 10.7 |
| KANSAS CITY NDC | SPRINGFIELD MO P&DC | LPC | 500 W CHESTNUT EXPY | SPRINGFIELD | MO | 65801 | 173.3 |
| KANSAS CITY NDC | WICHITA KS P&DC | LPC | 7117 W HARRY ST | WICHITA | KS | 67276 | 198 |
| LAS VEGAS NV P&DC | LAS VEGAS NV P&DC | RPDC/LPC | 1001 E SUNSET RD RM 1054 | LAS VEGAS | NV | 89199 | 0 |
| LAS VEGAS NV P&DC | LAS VEGAS NV MPA | LPC | 3755 E POST RD STE 110 | LAS VEGAS | NV | 89120 | 2.9 |
| LOS ANGELES CA P&DC | LOS ANGELES CA P&DC | RPDC/LPC | 7001 S CENTRAL AVE | LOS ANGELES | CA | 90052 | 0 |
| LOS ANGELES NDC | RPDC | 5555 BANDINI BLVD | BELL GARDENS | CA | 90201 | ||
| LOS ANGELES NDC | SAN BERNARDINO CA P&DC | LPC | 1900 W REDLANDS BLVD | SAN BERNARDINO | CA | 92403 | 63.7 |
| LOS ANGELES NDC | SANTA ANA CA P&DC | LPC | 3101 W SUNFLOWER AVE | SANTA ANA | CA | 92799 | 32.4 |
| LOUISVILLE KY P&DC | LOUISVILLE KY P&DC | RPDC/LPC | 1420 GARDINER LN | LOUISVILLE | KY | 40231 | 0 |
| LOUISVILLE KY P&DC | EVANSVILLE IN P&DC | LPC | 7100 PETERSBURG RD | EVANSVILLE | IN | 47711 | 121.1 |
| LOUISVILLE KY P&DC | KNOXVILLE TN P&DC | LPC | 1237 E WEISGARBER RD | KNOXVILLE | TN | 37950 | 244.2 |
| LOUISVILLE KY P&DC | LEXINGTON KY P&DC | LPC | 1088 NANDINO BLVD | LEXINGTON | KY | 40511 | 72.2 |
| MARGARET SELLERS CA P&DC | MARGARET SELLERS CA P&DC | RPDC/LPC | 11251 RANCHO CARMEL DR | SAN DIEGO | CA | 92199 | 0 |
| MARGARET SELLERS CA P&DC | MORENO VALLEY CA P&DC | LPC | 23800 CACTUS AVE | MORENO VALLEY | CA | 92553 | 71 |
| MEMPHIS NDC | RPDC | 1921 ELVIS PRESLEY BLVD | MEMPHIS | TN | 38136 | ||
| MEMPHIS NDC | LITTLE ROCK AR P&DC | LPC | 4700 E MCCAIN BLVD | LITTLE ROCK | AR | 72231 | 134.5 |
| MEMPHIS NDC | MEMPHIS TN P&DC | LPC | 555 S B B KING BLVD LBBY | MEMPHIS | TN | 38101 | 5.3 |
| MILWAUKEE WI MPA | RPDC | 2201 E COLLEGE AVE | OAK CREEK | WI | 53154 | ||
| MILWAUKEE WI MPA | MADISON WI P&DC | LPC | 3902 MILWAUKEE ST | MADISON | WI | 53714 | 81.7 |
| MILWAUKEE WI MPA | MILWAUKEE WI P&DC | LPC | 345 W SAINT PAUL AVE | MILWAUKEE | WI | 53203 | 9.2 |
| MINN-SAINT PAUL NDC | RPDC | 3165 LEXINGTON AVE S | EAGAN | MN | 55121 | ||
| MINN-SAINT PAUL NDC | DULUTH MN P&DC | LPC | 2800 W MICHIGAN ST | DULUTH | MN | 55806 | 156.9 |
| MINN-SAINT PAUL NDC | EAU CLAIRE WI P&DF | LPC | 3510 HOGARTH ST | EAU CLAIRE | WI | 54703 | 92.1 |
| MINN-SAINT PAUL NDC | MANKATO MN P&DF | LPC | 851 SUMMIT AVE | MANKATO | MN | 56001 | 80.2 |
| MINN-SAINT PAUL NDC | MINNEAPOLIS MN P&DC | LPC | 100 S 1ST ST | MINNEAPOLIS | MN | 55401 | 14 |
| MINN-SAINT PAUL NDC | SAINT CLOUD MN P&DC | LPC | 517 10TH AVE S | WAITE PARK | MN | 56387 | 88.6 |
| MINN-SAINT PAUL NDC | SAINT PAUL MN P&DC | LPC | 3232 DENMARK AVE | SAINT PAUL | MN | 55121 | 0 |
| MONTGOMERY AL P&DC | MONTGOMERY AL P&DC | RPDC/LPC | 6701 WINTON BLOUNT BLVD | MONTGOMERY | AL | 36119 | 0 |
| MONTGOMERY AL P&DC | BIRMINGHAM AL P&DC | LPC | 351 24TH ST N RM 210 | BIRMINGHAM | AL | 35203 | 99.6 |
| MONTGOMERY AL P&DC | HUNTSVILLE AL P&DF | LPC | 3408 WALL TRIANA HWY | HUNTSVILLE | AL | 35813 | 188.1 |
| MONTGOMERY AL P&DC | MOBILE AL P&DC | LPC | 4538 SHIPYARD RD | MOBILE | AL | 36675 | 185.5 |
| MONTGOMERY AL P&DC | PENSACOLA FL P&DC | LPC | 1400 W JORDAN ST | PENSACOLA | FL | 32501 | 170 |
| MONTGOMERY AL P&DC | GULFPORT MS P&DF | LPC | 10285 CORPORATE DR | GULFPORT | MS | 39503 | 240.6 |
| MUSIC CITY TN ANNEX | RPDC | 570 KNIGHT VALLEY DR | NASHVILLE | TN | 37227 | ||
| MUSIC CITY TN ANNEX | CHATTANOOGA TN P&DC | LPC | 6050 SHALLOWFORD RD | CHATTANOOGA | TN | 37421 | 136.8 |
| MUSIC CITY TN ANNEX | NASHVILLE TN P&DC | LPC | 525 ROYAL PKWY | NASHVILLE | TN | 37229 | |
| N HOUSTON TX P&DC | N HOUSTON TX P&DC | RPDC/LPC | 4600 ALDINE BENDER RD RM 224 | NORTH HOUSTON | TX | 77315 | 0 |
| N HOUSTON TX P&DC | BEAUMONT TX P&DF | LPC | 5815 WALDEN RD | BEAUMONT | TX | 77707 | 86.7 |
| N HOUSTON TX P&DC | S. Houston LPC | LPC | 611 HIGHWAY 90 A | MISSOURI CITY | TX | 77489 | 29.5 |
| NEW JERSEY NDC | RPDC | 80 COUNTY RD | JERSEY CITY | NJ | 07097 | ||
| NEW JERSEY NDC | DVD BLDG NJ P&DC | LPC | 850 NEWARK TPKE | KEARNY | NJ | 07099 | 4.3 |
| NEW JERSEY NDC | MORGAN NY P&DC | LPC | 341 9TH AVE RM A420 | NEW YORK | NY | 10199 | 22.9 |
| NEW JERSEY NDC | NORTHERN NJ METRO P&DC | LPC | 200 INDUSTRIAL AVE | TETERBORO | NJ | 07699 | 11.7 |
| NEW JERSEY NDC | WESTCHESTER NY P&DC | LPC | 1000 WESTCHESTER AVE | WHITE PLAINS | NY | 10610 | 41.4 |
| OKLAHOMA CITY OK P&DC | OKLAHOMA CITY OK P&DC | RPDC/LPC | 4025 W RENO AVE | OKLAHOMA CITY | OK | 73125 | 0 |
| OKLAHOMA CITY OK P&DC | FAYETTEVILLE AR P&DF | LPC | 2300 S CITY LAKE RD | FAYETTEVILLE | AR | 72701 | 243 |
| OKLAHOMA CITY OK P&DC | TULSA OK P&DC | LPC | 2132 S 91ST EAST AVE | TULSA | OK | 74141 | 115.8 |
| OMAHA NE P&DC | OMAHA NE P&DC | RPDC/LPC | 1124 PACIFIC ST RM 212 | OMAHA | NE | 68108 | 0 |
| OMAHA NE P&DC | LINCOLN NE P&DF | LPC | 700 R ST | LINCOLN | NE | 68501 | 59.8 |
| OMAHA NE P&DC | SIOUX FALLS SD P&DC | LPC | 4801 N 4TH AVE | SIOUX FALLS | SD | 57104 | 188.2 |
| PHILADELPHIA NDC | RPDC | 1900 BYBERRY RD STE 1 | PHILADELPHIA | PA | 19116 | ||
| PHILADELPHIA NDC | DELAWARE DE P&DC | LPC | 147 QUIGLEY BLVD | HISTORIC NEW CASTLE | DE | 19720 | 53.5 |
| PHILADELPHIA NDC | PHILADELPHIA PA P&DC | LPC | 7500 LINDBERGH BLVD | PHILADELPHIA | PA | 19176 | 27.8 |
| PHILADELPHIA NDC | SO JERSEY NJ P&DC | LPC | 421 BENIGNO BLVD | BELLMAWR | NJ | 08031 | 26.3 |
| PHILADELPHIA NDC | TRENTON NJ P&DC | LPC | 680 US HIGHWAY 130 | TRENTON | NJ | 08650 | 25.1 |
| PITTSBURGH NDC | RPDC | 300 BRUSH CREEK RD | WARRENDALE | PA | 15095 | ||
| PITTSBURGH NDC | ALTOONA PA P&DC | LPC | 141 PATCHWAY RD | DUNCANSVILLE | PA | 16635 | 107.2 |
| PITTSBURGH NDC | CHARLESTON WV P&DC | LPC | 1000 CENTRE WAY | SOUTH CHARLESTON | WV | 25309 | 248.1 |
| PITTSBURGH NDC | JOHNSTOWN PA P&DC-INSHD | LPC | 235 JARI DR RM 109 | JOHNSTOWN | PA | 15904 | 88.7 |
| PITTSBURGH NDC | PITTSBURGH PA P&DC | LPC | 1001 CALIFORNIA AVE RM 2057A | PITTSBURGH | PA | 15290 | |
| PORTLAND OR P&DC | PORTLAND OR P&DC | RPDC/LPC | 7007 NE CORNFOOT RD | PORTLAND | OR | 97218 | 0 |
| PORTLAND OR P&DC | EUGENE OR P&DC | LPC | 3148 GATEWAY ST | SPRINGFIELD | OR | 97475 | 122.7 |
| PORTLAND OR P&DC | MEDFORD OR P&DF | LPC | 2195 SAGE RD | MEDFORD | OR | 97501 | 286.1 |
| RICHMOND VA P&DC | RICHMOND VA P&DC | RPDC/LPC | 5801 TECHNOLOGY BLVD | SANDSTON | VA | 23150 | 0 |
| RICHMOND VA P&DC | NORFOLK VA P&DC | LPC | 600 CHURCH ST | NORFOLK | VA | 23501 | 89.5 |
| ROCHESTER NY P&DC | ROCHESTER NY P&DC | RPDC/LPC | 1335 JEFFERSON RD | ROCHESTER | NY | 14692 | 0 |
| ROCHESTER NY P&DC | BUFFALO NY P&DC | LPC | 1200 WILLIAM ST RM 201 | BUFFALO | NY | 14240 | 71.3 |
| ROCHESTER NY P&DC | SYRACUSE NY P&DC | LPC | 5640 E TAFT RD | SYRACUSE | NY | 13220 | 88.4 |
| ROYAL PALM FL P&DC | RPDC | 5500 NW 142ND ST | OPA LOCKA | FL | 33054 | ||
| ROYAL PALM FL P&DC | MIAMI FL P&DC | LPC | 2200 NW 72ND AVE STE 200 | MIAMI | FL | 33152 | 10.9 |
| SACRAMENTO CA P&DC | SACRAMENTO CA P&DC | RPDC/LPC | 3775 INDUSTRIAL BLVD | WEST SACRAMENTO | CA | 95799 | 0 |
| SACRAMENTO CA P&DC | FRESNO CA P&DC | LPC | 1900 E ST | FRESNO | CA | 93706 | 173 |
| SACRAMENTO CA P&DC | REDDING CA P&DF | LPC | 2323 CHURN CREEK RD | REDDING | CA | 96002 | 162 |
| SACRAMENTO CA P&DC | RENO NV P&DC | LPC | 2000 VASSAR ST | RENO | NV | 89510 | 140.2 |
| SALT LAKE CITY UT ASF | RPDC | 1960 S INDUSTRIAL RD | SALT LAKE CITY | UT | 84199 | ||
| SALT LAKE CITY UT ASF | PROVO UT P&DC | LPC | 936 S 250 E | PROVO | UT | 84606 | 44.7 |
| SALT LAKE CITY UT ASF | SALT LAKE CITY UT P&DC | LPC | 1760 W 2100 S | SALT LAKE CITY | UT | 84199 | 2.2 |
| SAN ANTONIO TX P&DC | SAN ANTONIO TX P&DC | RPDC/LPC | 10410 PERRIN BEITEL RD | SAN ANTONIO | TX | 78284 | 0 |
| SAN ANTONIO TX P&DC | AUSTIN TX P&DC | LPC | 8225 CROSS PARK DR | AUSTIN | TX | 78710 | 78.3 |
| SAN ANTONIO TX P&DC | CORPUS CHRISTI TX P&DC | LPC | 809 NUECES BAY BLVD | CORPUS CHRISTI | TX | 78469 | 149.3 |
| SAN ANTONIO TX P&DC | MCALLEN TX P&DC | LPC | 620 E PECAN BLVD | MCALLEN | TX | 78501 | 243.7 |
| SAN FRANCISCO NDC | RPDC | 2501 RYDIN RD | RICHMOND | CA | 94850 | ||
| SAN FRANCISCO NDC | EUREKA CA P&DF | LPC | 337 W CLARK ST | EUREKA | CA | 95501 | 266.1 |
| SAN FRANCISCO NDC | NORTH BAY CA P&DF | LPC | 1150 N MCDOWELL BLVD | PETALUMA | CA | 94999 | 38.9 |
| SAN FRANCISCO NDC | OAKLAND CA P&DC | LPC | 1675 7TH ST | OAKLAND | CA | 94615 | 11.6 |
| SAN FRANCISCO NDC | SAN FRANCISCO CA P&DC | LPC | 1300 EVANS AVE STE 300P | SAN FRANCISCO | CA | 94188 | 16.9 |
| SAN FRANCISCO NDC | SAN JOSE CA P&DC | LPC | 1750 LUNDY AVE | SAN JOSE | CA | 95101 | 48.7 |
| SANTA CLARITA CA P&DC | RPDC | 28201 FRANKLIN PKWY | SANTA CLARITA | CA | 91383 | ||
| SANTA CLARITA CA P&DC | BAKERSFIELD CA P&DC | LPC | 3400 PEGASUS DR | BAKERSFIELD | CA | 93380 | 82.6 |
| SANTA CLARITA CA P&DC | SANTA BARBARA CA P&DC | LPC | 400 STORKE RD | GOLETA | CA | 93199 | 83 |
| SANTA CLARITA CA P&DC | VAN NUYS CA FSS MAIL PROCESSING ANX | LPC | 15701 SHERMAN WAY | VAN NUYS | CA | 91406 | 22.4x |
| SEATTLE NDC | RPDC | 34301 9TH AVE S | FEDERAL WAY | WA | 98003 | ||
| SEATTLE NDC | SEATTLE WA P&DC | LPC | 10700 27TH AVE S | SEATTLE | WA | 98168 | 18.7 |
| SEATTLE NDC | TACOMA WA P&DC | LPC | 4001 S PINE ST | TACOMA | WA | 98413 | 12.8 |
| SEATTLE NDC | YAKIMA WA P&DF | LPC | 205 W WASHINGTON AVE | YAKIMA | WA | 98903 | 152.4 |
| SEMINOLE FL P&DC | RPDC | 2036 E LANDSTREET RD | ORLANDO | FL | 32824 | ||
| SEMINOLE FL P&DC | MID FLORIDA FL P&DC | LPC | 800 RINEHART RD | MID FLORIDA | FL | 32799 | 27.1 |
| SEMINOLE FL P&DC | ORLANDO FL P&DC | LPC | 10401 POST OFFICE BLVD W FL 1 | ORLANDO | FL | 32862 | 3.4 |
| SEMINOLE FL P&DC | WEST PALM BEACH FL P&DC | LPC | 3200 SUMMIT BLVD | WEST PALM BEACH | FL | 33416 | 175 |
| SOUTHERN ME P&DC | SOUTHERN ME P&DC | RPDC/LPC | 79 POSTAL SERVICE WAY | SCARBOROUGH | ME | 04074 | 0 |
| SOUTHERN ME P&DC | EASTERN ME P&DC | LPC | 16 PENOBSCOT MEADOW DR | HAMPDEN | ME | 04444 | 132.3 |
| SPOKANE WA P&DC | SPOKANE WA P&DC | RPDC/LPC | 2928 S SPOTTED RD | SPOKANE | WA | 99224 | 0 |
| SPOKANE WA P&DC | MISSOULA MT P&DF | LPC | 1100 W KENT AVE | MISSOULA | MT | 59801 | 205.2 |
| SPOKANE WA P&DC | WENATCHEE WA P&DF | LPC | 3075 OHME RD | WENATCHEE | WA | 98801 | 169.2 |
| SPRINGFIELD NDC | RPDC | 1800 PAGE BLVD | SPRINGFIELD | MA | 01152 | 0 | |
| SPRINGFIELD NDC | ALBANY NY P&DC | LPC | 30 KARNER RD | ALBANY | NY | 12288 | 94.8 |
| SPRINGFIELD NDC | BURLINGTON VT P&DC | LPC | 8 NEW ENGLAND DR STE 997 | ESSEX JUNCTION | VT | 05452 | 208.7 |
| SPRINGFIELD NDC | CENTRAL MA P&DC | LPC | 192 MAIN ST | SHREWSBURY | MA | 01546 | 50.4 |
| SPRINGFIELD NDC | HARTFORD CT P&DC | LPC | 141 WESTON ST | HARTFORD | CT | 06101 | 31.9 |
| SPRINGFIELD NDC | WHITE RIVER JUNC VT P&DC | LPC | 195 SYKES MOUNTAIN AVE | WHITE RIVER JUNCTION | VT | 05001 | 119.5 |
| ST LOUIS NDC | RPDC | 5800 PHANTOM DR | HAZELWOOD | MO | 63042 | ||
| ST LOUIS NDC | CAPE GIRARDEAU MO P&DF | LPC | 475 KELL FARM DR | CAPE GIRARDEAU | MO | 63701 | 125.8 |
| ST LOUIS NDC | COLUMBIA MO P&DC | LPC | 11450 S AIRPORT DR | COLUMBIA | MO | 65299 | 120.1 |
| ST LOUIS NDC | SPRINGFIELD IL P&DC | LPC | 2105 E COOK ST | SPRINGFIELD | IL | 62703 | 107.7 |
| ST LOUIS NDC | ST LOUIS MO P&DC | LPC | 1720 MARKET ST RM 3025 | SAINT LOUIS | MO | 63155 | 22.4 |
| WASHINGTON NDC | RPDC | 9201 EDGEWORTH DR | CAPITOL HEIGHTS | MD | 20799 | ||
| WASHINGTON NDC | BALT INC MAIL MD P&DC | LPC | 961 CORPORATE BLVD | LINTHICUM HEIGHTS | MD | 21090 | 37.3 |
| WASHINGTON NDC | BALTIMORE MD P&DC | LPC | 900 E FAYETTE ST RM 505 | BALTIMORE | MD | 21233 | 41.1 |
| WASHINGTON NDC | CURSEEN-MORRIS DC P&DC | LPC | 900 BRENTWOOD RD NE | WASHINGTON | DC | 20018 | 13.9 |
| WASHINGTON NDC | DULLES VA P&DC | LPC | 44715 PRENTICE DR | DULLES | VA | 20101 | 48.3 |
| WASHINGTON NDC | EASTERN SHORE MD P&DC | LPC | 29060 AIRPARK DR | EASTON | MD | 21601 | 62.5 |
| WASHINGTON NDC | NORTHERN VA P&DC | LPC | 8409 ROUTE 29 | MERRIFIELD | VA | 22081 | 29.7 |
| WASHINGTON NDC | SO MARYLAND MD P&DC | LPC | 9201 EDGEWORTH DR | CAPITOL HEIGHTS | MD | 20790 | 0 |
| WASHINGTON NDC | SUBURBAN MD P&DC | LPC | 16501 SHADY GROVE RD | GAITHERSBURG | MD | 20898 | 32.7 |
| WEST VALLEY AZ P&DC | RPDC | 620 N 47TH AVE | PHOENIX | AZ | 85043 | ||
| WEST VALLEY AZ P&DC | PHOENIX AZ P&DC | LPC | 4949 E VAN BUREN ST | PHOENIX | AZ | 85026 | 13.1 |
| WEST VALLEY AZ P&DC | TUCSON AZ P&DC | LPC | 1501 S CHERRYBELL STRA | TUCSON | AZ | 85726 | 122.6 |
| YBOR CITY FL P&DC | RPDC | 1801 GRANT ST | TAMPA | FL | 33605 | ||
| YBOR CITY FL P&DC | FT MYERS FL P&DC | LPC | 14080 JETPORT LOOP RM B-111 | FORT MYERS | FL | 33913 | 131.4 |
| YBOR CITY FL P&DC | MANASOTA FL P&DC | LPC | 850 TALLEVAST RD | SARASOTA | FL | 34260 | 45.9 |
| YBOR CITY FL P&DC | TAMPA FL P&DC | LPC | 3501 BESSIE COLEMAN BLVD FL 2 | TAMPA | FL | 33630 | 9.5 |
Mapping RPDC regions and LPC service areas
This map shows the 59 RPDC regions. Hover over the colored box next to the RPDC name and the region will be highlighted. Hover over the map and a pop-up will show the RPDC and LPC. Zoom in and the map will show the LPC for each 3-digit ZIP.
Service Standard Finder, extended version
The two-step Finder shown above can find the service standard, current and proposed, but the materials shared by the Postal Service with the PRC can provide additional information. Here's an extended version of the Finder. The instructions are the same: enter the origin 5-digit ZIP for in the first search box, then enter the OD pair 000-000 for the originating RPDC (oRPDC) and the destination LPC (dLPC).
The Finder will show the proposed service standard for RTO and non-RTO ZIP codes. It will also show the address for the originating post office and the oRPDC and the miles between them. If it's less than 50 miles, it's not subject to the RTO initiative; if it's more than 50 miles, it's an RTO office.
The Finder will also show the path of the mail piece, from oRPDC to dRPDC to LPC. In some cases, these are the same facility. For turnaround mail, the oRPDC and dRPDC are the same, and for co-located LPCs, the dRPDC and dLPC are the same.
The travel time from oRPDC to dLPC determines the service standard for the second let of the network, according to the table above.
In some cases, a five-digit ZIP code has more than one post office, such as the main post office and a station or branch. In a few cases, one of them is outside the 50-mile radius and subject to RTO, while the other is within 50 miles and not subject to RTO. For example, Shrewsbury, MA 01545 has three offices: the main post office, Turnpike Station, and a carrier annex. The main office and annex are more than 50 miles from the RPDC in Springfield and hence subject to RTO, while Turnpike Station is less than 50 miles and not an RTO office — but it will be treated as such anyway. According to USPS witness Hagenstein's testimony, if one office is outside the 50-mile radius, all offices in the ZIP code will be subject to RTO.
Another issue involves identifying the correct LPC for each of the 900 or so 3-digit ZIPs. The Postal Service has not shared a public list with the PRC on this, so the Finder may be showing an incorrect LPC here and there. One case, as flagged by Don Cheney of the APWU, involves Yakima WA 989. The final Mail Processing Facility Review (MPFR) shows Yakima having some of its operations consolidated with the Spokane RPDC, but on the library reference of RPDCs and LPCs, Yakima is an LPC of the Seattle RPDC. [Update: The USPS subsequently clarified that while parcels went from Yakima to Spokane, it is in fact an LPC of Seattle.]
Exceptions to the plus-1 rule: RTO offices with a 2-day standard
In most cases, the service standard for RTO mail is one day more than non-RTO mail. If the service standard for a non RTO origin is 2 days, it will be 3 days for an RTO office, and so on. There are two exceptions.
The first exception is that the maximum service standard is 5 days, so if the proposed service standard for a non-RTO OD pair is 5 days, the Postal Service will not add an additional day for RTO offices (in other words, 5+1=5). This is a key feature of the proposal, and it allows the Postal Service to say that it is only modifying the standards within the current range and not changing the 1-5 day range itself.
The second exception encompasses about 3,500 origin ZIPs and 2,100 post offices for which the outgoing local mail to some dZIP3 locations will retain a 2-day service standard, rather than shifting to 3-days. That's about 9 percent of the RTO offices. It's not clear yet why they will still have some 2-day mail. The map shows a small 2-day area (in green) for the RTO office in Carthage, Texas. You can use this table to check any 5-digit ZIP. If a ZIP produces no results, there are no exceptions to the plus-1 for the RTO office.
| oZIP5 | PO, ST | dZIP3 | Current | Proposed |
|---|---|---|---|---|
| 04401 | BANGOR, ME | 044 | 2 | 2 |
| 04401 | BANGOR, ME | 046 | 2 | 2 |
| 04401 | BANGOR, ME | 047 | 2 | 2 |
| 04401 | BANGOR, ME | 049 | 2 | 2 |
| 04402 | BANGOR, ME | 044 | 2 | 2 |
| 04402 | BANGOR, ME | 046 | 2 | 2 |
Making the Finder
Conveying the new service standards to customers is an important part of introducing the changes.
Under the current system, the service standards are based on travel time between one 3-digit ZIP and another. There are about 930 3-digit ZIPs, so when each origin ZIP is paired with every other destination ZIP3, it produces a spreadsheet with over 800,000 OD pairs and their corresponding service standards. The spreadsheet is shared with customers on Postal Pro.
Under the new system, the Postal Service is shifting to what it says is a more “precise” and “granular” approach. Rather than ZIP3 to ZIP3, the new standards will be based on 5-digit ZIP to 5-digit ZIP. There are about 40,000 ZIP codes, so if each were paired with another, it would produce a spreadsheet with 1.6 billion OD pairs. To share that with mailers would have represented a significant challenge.
As it turns out, however, the Postal Service is not pairing each origin 5-digit ZIP with a destination 5-digit ZIP. Instead, it's pairing the origin 5-digit with 3-digit destinations. For 40,000 origin ZIPs and 930 destination ZIP3s, there are 37.7 million OD pairs. That's obviously not as immense as 1.6 billion, but it's still far too many for a normal spreadsheet.
As part of the advisory opinion process, the Postal Service has provided the PRC with a large spreadsheet consisting of these 37.7 million OD pairs and all the service standards, current and proposed, for each market-dominant product. The file (USPS-LR-N2024-1-3) is too large to open using Excel; to access it, one must use special analytic software.
There is, however, another way to think about the new service standards. Every mail piece begins its journey within one of the 59 RPDC regions, and the same standards apply to the entire region, regardless of where it originates. The only reason to consider a 5-digit ZIP for the origin is to determine whether or not it’s subject to the additional day under RTO.
For the network leg of the journey, one need only consider the OD pairs between the 59 origin RPDCs and the 930 destination 3-digit ZIPs (for the 197 LPCs). This requires a spreadsheet of only 55,000 rows — way smaller than the 800,000 OD pairs under the current system and a tiny portion of the 37 million rows in the spreadsheet shared with the PRC.
The Service Standard Finders in this post are based on two spreadsheets. For Leg 1, the spreadsheet combines the list of 33,000 facilities with their RTO determination (USPS-LR-N2024-1-1) and a list of 40,000 ZIP5s extracted from the big Service Standard list (USPS-LR-N2024-1-3). The combined list has 43,000 ZIP5s. That includes about 2,700 duplicate ZIPs for cases where there are two post offices in the same ZIP5.
For Leg 2, the spreadsheet was extracted from the big Service Standard list and then merged with other lists in order to provide the names of the oRPDC, dRPDC, and dLPC. That process may have introduced errors, but the service standard should be correct.
You can find these spreadsheets, as well as others used in this post, on Google Docs here.
— Steve Hutkins
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