Exact federal listing answer
Is Cathedral of the Immaculate Conception on the National Register?
Yes · NPS status: Listed
Yes. Reference 85001257 is listed.
Yes. The U.S. National Park Service listed-properties dataset through May 22, 2026 identifies Cathedral of the Immaculate Conception as Listed in the National Register of Historic Places under reference 85001257.
Federal statusListed
National Register reference85001257
Listed dateJune 20, 1985
Property categoryBuilding
Published addressCumberland Ave. & Congress Sts.
LocalityPortland, Cumberland County, Maine
Significance levelState
Published acreage2
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, RELIGION.
Same locality
Other released Portland records.
Each linked page answers a separate named federal record.