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

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.
E-mail: sccgsoffice@stclair-ilgs.org  Privacy policy and Use Agreement.
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