Exact federal listing answer
Is Alton Chapter House on the National Register?
Yes · NPS status: Listed
Yes. Reference 80001388 is listed.
Yes. The U.S. National Park Service listed-properties dataset through May 22, 2026 identifies Alton Chapter House as Listed in the National Register of Historic Places under reference 80001388.
Federal statusListed
National Register reference80001388
Listed dateNovember 28, 1980
Property categoryBuilding
Published address509 Beacon St.
LocalityAlton, Madison County, Illinois
Significance levelState
Published acreage1.1
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: EDUCATION, POLITICS/GOVERNMENT, ARCHITECTURE, SOCIAL HISTORY.
Same locality
Other released Alton records.
Each linked page answers a separate named federal record.