Church of the Holy Family

E. 1st St., Cahokia, Illinois. County/parish: St. Clair.

Added to the National Register of Historic Places April 15, 1970. NRIS 70000851.

1 contributing building.

From Wikipedia:

Church of the Holy Family (Cahokia Heights, Illinois)

The Church of the Holy Family (French: Église de la Sainte-Famille) is a Catholic parish located at 116 Church Street in Cahokia Heights, Illinois. The occupying congregation is said to be the oldest continuously active Catholic parish in the United States, having been founded in 1699 by Canadian missionaries, and is the oldest church building west of the Allegheny Mountains.

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National Park Service documentation: https://catalog.archives.gov/id/28891648