Estimate of Median Household Income for Mercer County, IL was 70430.00000 $ in January of 2022, according to the United States Federal Reserve. Historically, Estimate of Median Household Income for Mercer County, IL reached a record high of 70430.00000 in January of 2022 and a record low of 26107.00000 in January of 1989. Trading Economics provides the current actual value, an historical data chart and related indicators for Estimate of Median Household Income for Mercer County, IL - last updated from the United States Federal Reserve on June of 2024.