StClair Co., IL Books Cemeteries Census
Created: Apr 27, 1790 Maps Official Records Photos Population
StClair Co., IL
StClair Co., IL was created by the Northwest Territory from non-county area.
You might consider searching in the Territory for earlier records.
The following table details the population of the County from the first census available up through 1940.
Information is shown for 1890, but that census was mostly lost due to a fire and mishandling in the 1920's and 1930's.
Don't forget to check on the main Illinois page for links to free online versions of the census
1790 - 1800 - 1810 - 1820 5,253 1830 7,078 1840 13,631 1850 20,180 1860 37,694
1870 51,068 1880 61,806 1890 66,571 1900 86,685 1910 119,870 1920 136,520 1930 157,775 1940 166,899
Historical Census Browser. The University of Virginia, Geospatial and Statistical Data Center:

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Census Records


Official Records
StClair Co., IL Government Offices Contacts
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Birth, Death, Marriage and Estate Records
Real Estate Transaction Records

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