Resident Population in Lake County, IL

Resident Population in Lake County, IL was 718.60400 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Resident Population in Lake County, IL reached a record high of 718.60400 in January of 2024 and a record low of 382.63800 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Lake County, IL - last updated from the United States Federal Reserve on September of 2025.



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