Exact federal listing answer
Is US Post Office-Petaluma on the National Register?
Yes · NPS status: Listed
Yes. Reference 85000140 is listed.
Yes. The U.S. National Park Service listed-properties dataset through May 22, 2026 identifies US Post Office-Petaluma as Listed in the National Register of Historic Places under reference 85000140.
Federal statusListed
National Register reference85000140
Listed dateJanuary 11, 1985
Property categoryBuilding
Published address120 4th St.
LocalityPetaluma, Sonoma County, California
Significance levelState
Published acreage0.8
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: ARCHITECTURE.
Other published names: Petulama Post Office.
Same locality
Other released Petaluma records.
Each linked page answers a separate named federal record.