- Post Office - Siler City NCThis 1940 post office, constructed with funds from the federal government, is home to Maxwell B. Starr's 1942 mural, "Building the First House at Siler's Crossroads," paid for by the Treasury Section of Fine Arts and available for view in the lobby.
- Post Office - Silver Creek NYThe historic post office in Silver Creek, New York was constructed as a federal Public Works Administration (PWA) project with Treasury Department funds. The building, which was constructed in 1935, is still in use today. "Federal Public Works Project #302."
- Post Office - Smithfield VASmithfield's historic post office was constructed with federal Treasury Department funds in 1941. The building, which is still in service, also houses a New Deal mural by William Abbot Cheever entitled "Captain John Smith Trading with the Indians."
- Post Office - Smithville TXThe historic post office in Smithville, Texas 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 - Somerset PAThe Somerset, Pennsylvania Post Office was constructed in 1936 with Treasury Department funds.
- Post Office - South Hadley MAThe post office in South Hadley, Massachusetts was constructed with federal Treasury Department funds. The building, which opened for business in 1935, is still in use today. A New Deal-funded tempera mural titled "Composite View of South Hadley" hangs in the lobby. It was painted by Saul Levine in 1942.
- Post Office - South Orange NJThe post office in South Orange, New Jersey was constructed with federal funds. The building, which was constructed between 1936 and 1938, is still in use today.
- Post Office - South Pasadena CAThis New Deal post office was built by the Treasury in 1935.
- Post Office - South Portland MEBuilt in 1937.
- Post Office - South River NJThe South River, New Jersey post office was constructed with federal funds between 1940 and 1942. It is still in use today.
- Post Office - Southern Pines NCThe Southern Pines post office was completed during the Depression with funds provided by the federal government. It is also the site of Joseph Presser's mural, "Southern Pines Idyll," painted in 1943 for the Treasury Section of Fine Arts.
- Post Office - Southington CTConstructed in 1940, this New Deal post office is also the site of Ann Hunt Spence's 1942 mural, "Romance of Southington," painted under the Treasury Section of Fine Arts.
- Post Office - Spencer INThe historic post office building in Spencer, Indiana was constructed with New Deal funds in 1938. It is still in use today.
- Post Office - Spencer WVThe post office in Spencer was constructed in 1936 with funds provided by the Treasury Department. It is also the site of Vicken von Post Totten's 1938 Plaster of Paris relief, entitled "Pastoral of Spencer," and completed with funds provided by the Treasury Section of Fine Arts.
- Post Office - Spring Valley NY"In 1931, Congress authorized 136 new post offices and extensions to existing ones in New York as part of an amendment to the Public Buildings Act it had passed five years earlier. The construction was meant to offer relief with the worsening of the Great Depression. Spring Valley's would not begin construction for another five years, in 1936. The site was purchased from a local lumber company that year. Construction began later that year, and the building opened in 1937. Its Colonial Revival design, by Treasury Department Supervising Architect Louis A. Simon, is unique to Spring Valley among the many Colonial...
- Post Office - Springerville AZ“The Springerville Post Office is simple in its appearance. Yet it also displays an eclectic collection of architectural design styles. The flat roof with parapets and six water spouts are characteristic of Pueblo Revival. The arched windows suggest Mission Revival influence and the twisted columns and lantern at the entry way arise from Spanish Baroque architecture. Funded by the Public Works Administration and constructed in 1937, the building was designed to house multiple government agencies including the U.S. Forest Service."
- Post Office - Springfield KYThe Springfield post office was constructed in 1939 with the federal Treasury Department funds. It is also the site of three limestone sculptures by Richard Davis: "Wood Chopper," "Kentucky Pioneer," and "Signing of the Marriage Contract of Thomas Lincoln and Nancy Hanks," completed in 1941 for the Treasury Section of Fine Arts.
- Post Office - Springfield VTThe post office in Springfield, Vermont was constructed using federal funds. Construction on the building began in 1935 and was completed in 1937. The post office is still in use today.
- Post Office - Springville NYThe historic post office building in Springville, New York was built "1936-1937, and is one of a number of post offices in New York State designed by the Office of the Supervising Architect of the Treasury Department under Louis A. Simon. The building is in the Colonial Revival style and is a one story brick structure crowned by a square, flat-topped cupola."
- Post Office - St. Albans WVThis New Deal post office was constructed by the Treasury in 1937. As of December 2013 it was still functioning and was known as the Old St. Albans Post Office. However Researcher Frank da Cruz reports this building now houses an architectural engineering firm. The wood relief sculpture "Science and Industry" by Reuben R. Kramer (1941) was moved to the new post office that was built in 986 at 431 B Street. He also reports that the cornerstone names Treasury Secretary Morgenthau, Postmaster General James Farley, Supervising Architect Louis A. Simon, Neil A. Melick Supervising Engineer. "The Old St. Albans Post Office...
- Post Office - St. Clair MIConstructed with New Deal funds in 1937-8. "Of contemporary design, the building has brick exterior walls with stone trim and wood windows. Granite steps and a platform with railings and lamp standards mark the front of the entrance. At the rear of the structure are the usual vestibule and a platform for the reception of mail and a mailing drive with space for parking postal automobiles. A flat composition roof covers the building. Foundation walls and the floor slab are concrete. In general the building is fireproof" (The Port Huron Times Herald, 1938). As of 2011, the St. Clair Post Office will...
- Post Office - St. Helena CAThe historic post office in St. Helena, California was constructed with Treasury Department funds in 1940. The building, which houses the mural "Grape Pickers," painted by Lew Keller in 1942 for the Treasury Section of Fine Arts, is still in use today.
- Post Office - St. James MNThe post office in St James was completed in 1938 with funds provided by the Treasury Department. It is also the site of Margaret Martin's 1940 mural, "Indian Hunters and Rice Gatherers," completed with funds provided by the federal government and viewable in the lobby.
- Post Office - St. Johns MIThe historic post office in St. Johns, Michigan was constructed in 1935 with Treasury Department funds. The building is still in service.
- Post Office - St. Johnsville NYThe historic post office building in St. Johnsville, New York "was built in 1936, and is one of a number of post offices in New York State designed by the Office of the Supervising Architect of the Treasury Department under Louis A. Simon. It is a one story, symmetrical brick building on a stone watertable in the Colonial Revival style. It features a copper clad gable roof with a square, flat topped cupola with a weathervane. The interior features a 1940 mural by Jirayr H. Zorthian (1911-2004) titled "Early St. Johnsville Pioneers." Listed on the National Register of Historic Places in...
- Post Office - St. Joseph MIThe historic post office in St. Joseph, Michigan was constructed in 1937 with Treasury Department funds. The building is still in service.
- Post Office - St. Joseph MOConstructed by the Treasury Department in 1938.
- Post Office - St. Marys WVErected in 1937.
- Post Office - Starke FLThe Starke, Florida post office was constructed with federal funds. The building, which opened in 1941, is still in use today.
- Post Office - Staunton ILThe post office in Staunton was completed in 1938 with funds provided by the Treasury Department. It is also the site of Ralf Henricksen's mural, "Going to Work," completed in 1941 with funds provided by the Treasury Section of Fine Arts and viewable in the lobby.
- Post Office - Staunton VAThe historic Woodrum Station post office in Staunton, Virginia was built with Treasury Department funds in 1935. The building houses an example of New Deal artwork.
- Post Office - Ste. Genevieve MOThe historic Ste. Genevieve post office was constructed with Treasury Department funds in 1939. The building, which houses an example of New Deal artwork, is still in service.
- Post Office - Stilwell OKThe historic and stately New Deal post office in Stilwell, Oklahoma was constructed in 1940. The building houses an example of New Deal artwork and is still in service.
- Post Office - Stoneham MAThe Stoneham, Massachusetts branch post office was constructed with federal funds. The building, which opened for business in 1940, is still in use today.
- Post Office - Stonington CTThe historic Stonington post office was constructed in 1940-1 under the Federal Works Agency with Treasury Department funds. The building is still in service.
- Post Office - Stoughton WIThe historic Stoughton, Wisconsin post office 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 - Strasburg VAThe historic Strasburg, Virginia was constructed in 1936 with Treasury Department funds. The building, which houses New Deal artwork, is still in service.
- Post Office - Struthers OHThe historic post office in Struthers, Ohio was constructed with federal Treasury Department funds in 1938. The building, which houses an example of new Deal artwork, is still in service.
- Post Office - Stuart VAThe historic post office in Stuart, Virginia was constructed in 1941 with Treasury Department funds. The building, which houses an example of New Deal artwork, is still in service.
- Post Office - Sturgeon Bay WIConstructed by the Treasury Department in 1937.