Welcome to St. Clair County, located in Southwestern Illinois across the Mississippi River from St. Louis. Established in 1790, it is Illinois’ oldest county.

  • Dive into the COLLECTIONS menu, for all our public site databases, read about our newest Member Benefits, the cross-reference to “Belleville Newspaper Abstracts 1840–1940” and Mount Hope Cemetery Lot Cards (burials). Please consider joining SCCGS and support its endeavors.
  • Order SCCGS’s newest publication St. Paul UCC Freeburg (1864–2013) e-Book, and read about all the rest. All titles may be purchased online in the Shop 
  • The Quarterly  indexes more than a quarter million St. Clair ancestors (late 1700s–20th century). 

We gratefully acknowledge the efforts of SCCGS volunteers who preserve and publish extensive information about our ancestors’ sojourn here. Meet us at free lectures and events.

SEARCH for your ancestors, whether rooted in the county’s early 18th century French settlements; Americans who migrated from the east coast and southern States, German, Irish and English immigrants who arrived 1830-1860s, or eastern European settlers who found new homes here at the dawn of the 20th century.

St. Clair County Genealogical Society, PO Box 431, Belleville, IL 62222-0431.
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