Resident Population in Cook County, IL

Resident Population in Cook County, IL was 5182.61700 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Resident Population in Cook County, IL reached a record high of 5523.00000 in January of 1971 and a record low of 5109.52400 in January of 1990. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Cook County, IL - last updated from the United States Federal Reserve on April of 2026.



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