- Post Office - Negaunee MIThe historic post office in Negaunee, Michigan was constructed in 1937-8 with Treasury Department funds. The building is still in service.
- Post Office - Neillsville WIConstructed in 1937 and listed on the National Register of Historic Places.
- Post Office - Nelsonville OHThe historic post office in Nelsonville, Ohio was constructed in 1937 with federal Treasury Department funds. The building is still in service.
- Post Office - Neodesha KSBuilt in 1935, it is also home to the 1938 mural, "Neodesha's First Inhabitants," painted by Bernard J. Steffen for the Treasury Section of Fine Arts.
- Post Office - New Brunswick NJThe New Brunswick Post Office was built in 1936 with Treasury Department funds.
- Post Office - New Castle DEThe historic post office building in downtown New Castle, Delaware is a fine example of a stately New Deal post office. The facility, which houses an example of New Deal artwork, is still in service. Short and Stanlet-Brown: "New Castle is historically and architecturally the most important town in Delaware, so that great care had to be taken to provide a post office which would blend with the many fine old colonial buildings. The building constructed accomplishes this. The mailing platform and vestibule are in a wing and the drive for the trucks is screened from the street by a wall...
- Post Office - New Concord OHThe historic post office building in New Concord, Ohio was constructed in 1938 with federal Treasury Department funds. The building, which houses an example of New Deal artwork, is still in service.
- Post Office - New Hampton IAThe post office in New Hampton was completed in 1938 with funds provided by the Treasury Department. It is also the site of Thomas Savage's 1939 mural, "Breaking the Colts," completed with funds provided by the Treasury Section of Fine Arts and viewable in the lobby.
- Post Office - New Lexington OHThe historic post office building in New Lexington, Ohio was constructed with federal Treasury Department funds ca. 1937. The building, which houses a New Deal mural inside, is still in use today.
- Post Office - New London OHThe historic post office in New London, Ohio was constructed with federal Treasury Department funds in 1939. The building, which houses an example of new Deal artwork, is still in service.
- Post Office - New Rochelle NYThe historic post office building in downtown New Rochelle, New York "is a Moderne building built in 1937. It was listed on the National Register of Historic Places in 1989 as the result of a Multiple Property Submission that included 148 post office buildings in the state of New York." (Wikipedia) The post office was constructed with federal Treasury Department funds and is still in use today.
- Post Office - New Rockford NDNew Rockford, North Dakota received a new post office in 1939. The building was constructed with Treasury Department funds; work began in 1938 and the building open for business on October 29, 1939. Still in use today, the post office features a mural titled "Advance Guard of the West," which was installed in 1940.
- Post Office - Newberg ORThe historic post office in Newberg, Oregon was constructed in 1936 with federal Treasury Department funds. The building, which houses an example of New Deal artwork inside, is still in use today.
- Post Office - Newcomerstown OHThe historic post office in Newcomerstown, Ohio was constructed in 1939 with federal Treasury Department funds. The building is still in service.
- Post Office - Newport NHThe Newport, New Hampshire post office was constructed in 1935 with Treasury Department funds.
- Post Office - Newton MSThis New Deal Post Office was constructed in 1936.
- Post Office - Nocona TXThe historic post office in Nocona, Texas was constructed in 1935-6 with federal Treasury Department funds. The building is still in service.
- Post Office - Nokomis ILThe post office in Nokomis was completed in 1941 with funds provided by the Treasury Section of Fine Arts. It is also the site of Bernard J. (Tony) Rosenthal's wood carving, entitled "Coal Mining," completed in 1941 with funds provided by the Treasury Section of Fine Arts and viewable in the lobby.
- Post Office - Normal ILConstructed by the Treasury Department in 1935.
- Post Office - Norristown PAThe historic post office building in Norristown, Pennsylvania was constructed with federal Treasury Department funds in 1934. The building, which houses New Deal murals inside, is still in use today.
- Post Office - North Bergen NJThe North Bergen post office was constructed in 1939 with New Deal funds. A mural by Avery Johnson, “Purchase of Territory of North Bergen from the Indians,” was installed in 1942.
- Post Office - North Manchester INThe historic post office in North Manchester, Indiana was constructed with Treasury Department funds ca. 1936. The building, which houses an example of New Deal artwork, is still in service.
- Post Office - North St. Paul MNThis post office in North St. Paul was constructed circa 1938 with the help of New Deal funds. North St. Paul is a small municipality close to, but separate from, St. Paul, MN.
- Post Office - Northampton PAThe historic Northampton post office building was constructed in 1937 with federal Treasury Department funds. The building, which houses an example of New Deal artwork, is still in service.
- Post Office - Northfield MNThe historic post office in Northfield, Minnesota was constructed in 1936 with Treasury Department funds. The building is still in service.
- Post Office - Northfield VTThe historic Northfield post office was constructed with federal Treasury Department funds in 1937. The building, which houses examples of New Deal artwork, is still in service.
- Post Office - Northport NYThe historic post office building in Northport, New York was designed by Louis A. Simon in conjunction with the United States Treasury Department. The building was added to the National Register of Historic Places in 1989. Construction began in 1935 and the building opened in 1936.
- Post Office - Northumberland PAThe historic post office building in Northumberland, Pennsylvania was constructed with federal Treasury Department funds and opened in 1941. The building, which houses a New Deal bas relief sculpture in its lobby, is still in use today.
- Post Office - Norwalk CTThe historic main post office in Norwalk, Connecticut was constructed with federal Treasury Department funds. The building, which houses multiple examples of New Deal artwork, is still in service.
- Post Office - Norway METhe historic post office in Norway, Maine was constructed in 1940 with federal Treasury Department funds. The building bears a 1940 cornerstone and houses an example of New Deal artwork.
- Post Office - Norwood MAThe post office in Norwood, MA was constructed during the opening months of the New Deal in 1933.
- Post Office - Nowata OKThe historic post office in Nowata, Oklahoma was constructed with federal Treasury Department funds. The building, which houses New Deal artwork inside, was completed in 1940 and is still in use today.
- Post Office - Nutley NJNutley, New Jersey's historic branch post office was built in 1939 with federal Treasury Department funds.
- Post Office - O'Neill NEThe O'Neill United States Post Office is a one-story, brick building constructed in 1937 in the Georgian Revival style by the US Treasury Department.
- Post Office - Oak Harbor OHThe historic post office building in New Lexington, Ohio was constructed with federal Treasury Department funds and completed in 1939. The building, which houses a New Deal mural inside, is still in use today.
- Post Office - Oak Hill WVThe historic post office in Oak Hill, West Virginia was constructed with federal Treasury Department funds. The building, which was constructed in 1936, houses an example of New Deal artwork and is still in service.
- Post Office - Oak Park ILThe Oak Park post office was designed to accommodate the village’s growing population which rose from 39,858 in 1920 to 80,000 in 1930. Congress appropriated $600,000 prior to new deal legislation in 1931 with an additional $70,000 appropriated in 1935 to complete the project which had been delayed. The post office sits on a prominent parcel of downtown Oak Park which was purchased at a cost of $175,000 from the George R. Hemingway brokerage office. The building was dedicated on August 21, 1936 and remains an active post office today.
- Post Office - Oakdale LAThe historic post office in Oakdale, Louisiana was constructed in 1936 with U.S. Treasury Department funds. The building, which houses a New Deal mural, is still in use today.
- Post Office - Oakes NDThe post office in Oakes, North Dakota was constructed with federal funds. The building, which opened for business in 1935, is still in use today.
- Post Office - Oakland MDA cornerstone on the Oakland, Maryland Post Office shows it to be a project of the Federal Works Administration from 1940.