This map and list are based on the JLL website’s listing of USPS Properties for Lease.  The information about building occupancy date comes from the USPS Facility Reports.  With a few exceptions, the images come from map search results on Google Place of Business and Street Views.  Other sources include Wikimedia, the Living New Deal, Waymarking, and the Post Mark Collectors Club.  To sort or filter the list, go to the Fusion Table version.

(Legend: Red: Listed on the National Register; blue: high significance; purple: eligible; green: N/A)