Exact federal listing answer
Is US Post Office-Mount Vernon on the National Register?
Yes · NPS status: Listed
Yes. Reference 88002355 is listed.
Yes. The U.S. National Park Service listed-properties dataset through May 22, 2026 identifies US Post Office-Mount Vernon as Listed in the National Register of Historic Places under reference 88002355.
Federal statusListed
National Register reference88002355
Listed dateMay 11, 1989
Property categoryBuilding
Published address15 S. First St.
LocalityMount Vernon, Westchester County, New York
Significance levelState
Published acreage0.9
Exact answer boundaryThis confirms the named federal record only.
It does not prove that another address lies inside this property or district, establish local landmark status, decide preservation review, define a legal boundary, or describe ownership or current condition.
Why the wording is date-boundedThe answer reflects the NPS dataset published through May 22, 2026 and a live NPS GIS Listed-status cross-check made September 20, 2026. NPS notes that spatial points and polygons may need correction and are not legal documents.
Additional published fields
Areas of significance: POLITICS/GOVERNMENT, ARCHITECTURE.
Other published names: Mount Vernon Post Office.
Same locality
Other released Mount Vernon records.
Each linked page answers a separate named federal record.