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St Clair County, Illinois
Genealogy, History & Facts

St Clair County, Illinois Facts

StClair County

When was St Clair County, IL Created?
St Clair County was established on April 27, 1790 from the Northwest Territory (St. Clair County was the first county established in Illinois, at the time a part of the Northwest Territory). This county was named for Arthur St. Clair (1737-1818), major general in the American Revolutionary War and first Governor of the Northwest Territory.

What is the County Seat of St Clair County, IL?
The County Seat is located in Belleville (three judicial districts was initially established in Cahokia, Kaskaskia and Prairie du Rocher. With the formation of Randolph County in 1795, Cahokia became the sole seat of government for St. Clair County from 1790–1814) also, the county government website is .

What counties are adjacent to St Clair County, IL?
Bordering Counties are  Madison County (north), Clinton County (northeast), Washington County (east), Randolph County (south), Monroe County (southwest), St. Louis, Missouri (west), St. Louis County, Missouri (west)

What cities and towns are in St Clair County, IL?
Cities and towns located in the County include  Alorton, Belleville, Brooklyn, Cahokia, Caseyville, Centreville, Collinsville, Dupo, East Carondelet, East St. Louis, Fairmont City, Fairview Heights, Fayetteville, Freeburg, Lebanon, Lenzburg, Marissa, Mascoutah, Millstadt, New Athens, O'Fallon, Sauget, Scott AFB, Shiloh, Smithton, St. Libory, Summerfield, Swansea, Washington Park.

What Townships are in St Clair County, IL?
Townships located in the County include Belleville, Lebanon, Lenzburg, Fayetteville, Engelmann, East St. Louis, Freeburg, Canteen, Caseyville, Centreville, Prairie du Long, O’Fallon, Marissa, Mascoutah, Millstadt, New Athens, Stites, St. Clair, Shiloh Valley, Smithton, Sugarloaf, Stookey.

St Clair County, IL Vital Records

Where can find St Clair County Birth, marriage, Divorce and Death Records?
St Clair County vital records can be found at the Illinois Department of Public Health has copies of birth, marriage, divorce and death records. There is a fee for each copy requested. Please refer to the information to the Statewide Vital Records in Illinois for current fees and application process.

You can search online for St Clair County Birth, Marriage, Divorce or Death Records. You can also Order Electronically Online or can download an application for Illinois Birth CertificateMarriage CertificateDivorce CertificateDeath Certificate Applications to mail.

St Clair County, IL Census Records

What St Clair County, IL census records are available?
There are many types of census records for St Clair County guide you in researching your family tree. Federal Population Schedules are available for 1790, 1800, 1810, 1820, 1830, 1840, 1850, 1860, 1870, 1880 (free index), 1890 (fragment), 1900, 1910, 1920, 1930, 1940.

St Clair Co. Mortality Schedules can be found for 1850, 1860, 1870 and 1880. St Clair Co. Industry and Agriculture can be obtained for 1850, 1860, 1870 and 1880. St Clair Co. Union Veterans Schedules is available for 1890. One can find free online and printable census forms to help you with your research. See Also Illinois Census Records Research Guide

St Clair County, IL Courthouse and Government Records

St Clair County Courthouse

What genealogical records can I find in the St Clair County Courthouse?
The below facts shows exactly what death, marriage, birth, property, wills, and court records are typically in St Clair County. The years listed below are the first noted records with this county. See Also Illinois Corthouse Records Research Guide.

  • St Clair County Courthouse (all departments listed below are located here, unless otherwise noted)
    • Address: 10 Public Square, Belleville, IL 62220
  • St Clair County Clerk maintains records and issues certificates of vital statistics (birth certificates, death certificates, and marriage certificates) for the entire County.
    • Address: 618-277-6600, ext. 2380
    • Marriage Records: 1763
    • Birth & Death Records: 1830
  • St Clair County Recorder of Deeds serves the people of County by receiving, filing and maintaining all records related to real property in our county. These documents range from all types of conveyance deeds, mortgages, releases and assignments, property liens, as well as, assorted federal, state and local liens. The Recorder’s office is responsible for the recordation and storage of plats of subdivision, land surveys and monument records. Many other types of miscellaneous documents are recorded, such as; foreign birth certificates, foreign marriage licenses, and military discharge paperwork to name a few.
    • Phone: 618-277-6600, ext. 2478
    • Land Records:1786
  • St Clair County Clerk of the Circuit Court, commonly known as the Circuit Clerk, is the keeper of the files and records of the Circuit Court. The Circuit Clerk's Office retains documents some of which include criminal law, chancery, support, probate, adoption, ect....
    • Phone: 618-277-6600, ext. 2323
    • Probate Records: 1772
    • Court Records: 1778
  • St Clair County Treasurer's Office is responsible for the statutory duties required as County Treasurer and as Ex-Officio County Collector of Real Estate Property Taxes and Drainage District Taxes for the entire county.
  • Circuit Court Index 1819 – 1840
  • Cahokia records, 1778-1790
  • The county archives of the state of Illinois
  • Local Government Records Database - provides a listing of the local governmental records held by the Illinois Regional Archives Depository (IRAD) system
  • BLM Land Records

St Clair County, IL Societies and Family History Resources

What genealogical and historical societies, archives, museums, associations and libraries are available for St Clair County, IL?
A list of St Clair County Historical  and Genealogical Societies, Libraries, Archives. See also list of Statewide Illinois Archives, Historical & Genealogical Societies.

Where can I connect with other St Clair County, IL Researchers through message boards and forums?

What other genealogical resources are available in St Clair County, IL?
The following are web links to Genealogy, Records and Resources pertaining to St Clair County. These genealogy links fall into 3 categories: Commercial Sites, Private Sites or Organization Sites. Some have free access some require a cost. This is simply a collection that has been gathered or submitted. I do not recommend or promote one genealogy site over another.

St Clair Co. IL Maps, Atlases & Gazetteers

St Clair Co. IL Books, Newspapers & Publications

St Clair Co. IL Cemeteries & Church Records

St Clair Co. IL Family Websites, Pictures & Histories

St Clair Co. IL General and History Websites

St Clair Co. IL Military Records

St Clair Co. IL Schools & Directories

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