Resident Population in Mercer County, IL

Resident Population in Mercer County, IL was 15.29200 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Resident Population in Mercer County, IL reached a record high of 19.60000 in January of 1979 and a record low of 15.29200 in January of 2024. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Mercer County, IL - last updated from the United States Federal Reserve on September of 2025.



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