- Post Office - Pampa TXThe historic post office in Pampa, Texas was constructed with Treasury Department funds and completed in 1934. The building is still in service.
- Post Office - Paola KSThe historic post office in Paola, Kansas was constructed in 1936 with federal Treasury Department funds. The building is still in service.
- Post Office - Paoli INThe historic post office building in Paoli, Indiana was built in 1938 with New Deal funds. It is still in use today.
- Post Office - Paris ARThe historic post office building in Paris, Arkansas was constructed with federal Treasury Department funds. The building, which was completed in 1939, is still in use today.
- Post Office - Paris MOConstructed by the Treasury Department in 1937.
- Post Office - Park Falls WIConstructed in 1936 and listed on the National Register of Historic Places.
- Post Office - Park Rapids MNThe historic post office in Park Rapids, Minnesota was built in 1938 as a New Deal project. The building bears a standard cornerstone and houses examples of New Deal artwork.
- Post Office - Pasadena TXThis one-story brick building with large porch, supported by six large columns, was constructed in 1939 with Treasury Department funds under the Federal Works Agency. Cornerstone: James A. Farley Postmaster General John M. Carmody Federal Works Administrator W. Englebert Reynolds Supervising Architect Neal A. Melick Supervising Engineer 1939
- Post Office - Pasco WAConstructed by the Treasury Department in 1934.
- Post Office - Paulding OHThe post office in Paulding was completed in 1939 with funds from the federal Treasury Department. It is also the site of Charles Umlauf's "Industry," sculpted for the Treasury Section of Fine Arts in 1940.
- Post Office - Pauls Valley OKThe historic post office in Pauls Valley, Oklahoma was constructed with federal Treasury Department funds. The building was completed in 1936 and is still in use today.
- Post Office - Paulsboro NJThe Paulsboro Post Office was built in 1939 with Treasury Department funds.
- Post Office - Paw Paw MIThe historic post office in Paw Paw, Michigan was constructed in 1939-40 with federal Treasury Department funds. The building, which houses an example of New Deal artwork, is still in service.
- Post Office - Pawhuska OKThe historic post office in Pawhuska, Oklahoma was constructed with federal Treasury Department funds. The building, which houses New Deal artwork inside, was completed in 1937 and is still in use today.
- Post Office - Pawnee City NEThe historic post office in Pawnee City, Nebraska was constructed in 1940 with federal Treasury Department funds. The building, which houses New Deal artwork inside, is still in service.
- Post Office - Payette IDThe historic post office in Payette, Idaho was constructed in 1937 with Treasury Department funds. The building is still in service.
- Post Office - Pearl River NYThe historic post office in Pearl River, New York was constructed with federal Treasury Department funds. The building, which was constructed from 1935 to 1936, is still in service.
- Post Office - Pecos TXThe historic U.S. Post Office and Court House in Pecos, Texas bears a 1935 cornerstone and was constructed with federal Treasury Department funds. The building, which was completed in 1936, is still in service as a post office.
- Post Office - Pelham GAThe historic post office in Pelham, Georgia was constructed ca. 1940.
- Post Office - Pella IAThe post office in Pella was completed in 1937 with funds provided by the Treasury Department. It is also the site of Byron Ben Boyd's 1938 mural, "Hollanders Settle in Pella," completed with funds provided by the Treasury Section of Fine Arts and viewable in the lobby. "Over 1,000 residents in the Marion County town of Pella toured the post office on its opening day, April 26, 1937. The Pella Chronicle wrote the $55,000 post office 'fills a long-felt need and it will now be possible to give even better service than before.' The article highlights the spacious lobby, efficient workspace,...
- Post Office - Pendleton INConstructed by the Treasury Department in 1936 under the supervision of Supervising Architect Louis A. Simon and Supervising Engineer Neal A. Melick.
- Post Office - Penns Grove NJThe historic Penns Grove post office was constructed in 1940 with Treasury Department funds.
- Post Office - Perry OKThe historic post office building in Perry, Oklahoma was constructed with federal Treasury Department funds. The building, which was completed in 1939, is still in use today. A New Deal mural that had been housed in the post office lobby has since been relocated to a nearby museum.
- Post Office - Perth Amboy NJThe historic post office in Perth Amboy, New Jersey was constructed with federal Treasury Department funds in 1937. The building is still in use today.
- Post Office - Peterborough NHBuilt in 1936.
- Post Office - Petersburg VAThe historic post office building in Petersburg, Virginia, was constructed by the Treasury Department in 1935. The building is still in use today.
- Post Office - Phillipsburg NJThe historic and distinctive post office building in Phillipsburg, New Jersey was constructed in 1933 with Treasury Department funds. It is still in service.
- Post Office - Picayune MSThe Colonial Revival style post office was built in 1937-8. It contains a mural, "Lumber Region of Mississippi" by Donald H. Robertson.
- Post Office - Piedmont ALThe historic post office in Piedmont, Alabama was constructed in 1940 with federal Treasury Department funds. The building is still in service today.
- Post Office - Piggott ARThe historic post office in Piggott, Arkansas was constructed in 1937-8 with funds provided by the Treasury Department. Louis A. Simon served as the supervising architect and Neal A. Melick was supervising engineer. The building also houses an example of New Deal artwork: a mural entitled "Air Mail," in the lobby. The mural was featured on a sheet of U.S. postage stamps: "Post Office Murals." The First-Day ceremony for the stamps was held in front of the Piggott post office on April 10, 2019.
- Post Office - Pineville KYThe post office in Pineville was completed in 1935 with funds provided by the Treasury Department. It is also the site of Edward Fern's 1942 mural, "Kentucky Mountain Mail En Route," completed with funds provided by the Treasury Section of Fine Arts.
- Post Office - Pipestone MNThe historic post office building in Pipestone, Minnesota was constructed with federal Treasury Department in 1935. The building is still in service.
- Post Office - Pitman NJThe historic post office building in Pitman, New Jersey was completed in 1937 with Treasury Department funds. The building, which houses an example of New Deal artwork, is still in service.
- Post Office - Pittsfield ILThe historic post office in Pittsfield, Illinois was constructed with Treasury Department funds in 1935.
- Post Office - Plainville CTThe historic post office building in Plainville, Connecticut was constructed in 1934 with federal Treasury Department funds. The building is still in use today.
- Post Office - Pleasant Hill MOThe post office in Pleasant Hill was constructed with funds provided by the Treasury Department in 1937.
- Post Office - Plymouth NHThe historic post office in Plymouth, New Hampshire was constructed in 1937 with federal Treasury Department funds. The building, which houses an example of New Deal artwork, is still in use today.
- Post Office - Plymouth PAThe post office in Plymouth, Pennsylvania was constructed with federal Treasury Department funds in 1935. The building is still in use today. A 1938 Section of Fine Arts-funded mural titled "Meal Time with the Early Coal Miners" was painted by Jared French and hangs in the lobby.
- Post Office - Plymouth WIConstructed by the Treasury Department in 1940.
- Post Office - Pocomoke City MDThe U.S. Post Office building in Pocomoke City, Maryland, is a U.S. Treasury project from 1937. It is one of the many hundreds of post offices built during the New Deal era that still serve Americans today.