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

  • Exploring this site thoroughly will take more than a surname search. Dive into the Collections menu, the data gateway to Catholic  church record abstracts, tombstone readings, cemetery locations, and biographical indexes. 
  • The Quarterly surname index will help find your ancestor among the 250,000+ people chronicled on its pages.  BOOKS – serve an ongoing need – whether digital or printed in the Shop link upper right menu. These detail the county’s residents in religious events, cemeteries in which they are buried, and census, court, and vital records in which they appear.

We gratefully acknowledge the efforts of SCCGS volunteers who preserve and publish extensive information about our ancestors’ sojourn here. Learn more at About SCCGS, member benefits here, and events (free virtual monthly lectures).

Search for your heritage, 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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