RockIsland Co., IL Books Cemeteries Census
Created: Feb 9, 1831 Maps Official Records Photos Population
RockIsland Co., IL
RockIsland Co., IL was created from Jo Daviess Co.
You might consider searching in that County 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 - 1830 - 1840 2,610 1850 6,937 1860 21,005
1870 29,783 1880 38,302 1890 41,917 1900 55,249 1910 70,404 1920 92,297 1930 98,191 1940 113,323
Historical Census Browser. The University of Virginia, Geospatial and Statistical Data Center:

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Census Records


Official Records
RockIsland Co., IL Government Offices Contacts
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