RESEARCH COOK COUNTY HISTORY

The census data from 1900 to 1930 is now online.

Please note that the spelling of names may vary and are recorded here as they were put down by the inumerator in 1900 and 1910.

If you are able to help clarify any of the names please contact the Cook County Historical Society.

This information is available in various formats for serious geneologists. Click here to find out how to contact us.

	Census 1900 ( PDF Format ) Census 1900 ( Excel Format )
	Census 1910 ( PDF Format ) Census 1910 ( Excel Format )
	Census 1920 ( PDF Format ) Census 1920 ( Excel Format )
	Census 1930 ( PDF Format ) Census 1930 ( Excel Format )