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Cook County, IL Genealogy

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This county is adoptable.
See this webpage for more information if you are interested.

Contact: ILGenWeb State Coordinator

More than 40% of all residents of Illinois live in Cook County.
As of 2020, the population was 5,275,541.
Its county seat is Chicago, the most populous city.

Our goal is to preserve Cook County family data for others to explore their ancestors.

How to Determine Cook County Township

Search offsite online records:

Records in the Illinois State Archives

Databases of Illinois Veterans

Illinois Statewide Vital Records Databases

GenWeb Links

Other Useful Links


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