Per Capita Personal Income in Mercer County, IL was 59186.00000 $ in January of 2022, according to the United States Federal Reserve. Historically, Per Capita Personal Income in Mercer County, IL reached a record high of 59186.00000 in January of 2022 and a record low of 3749.00000 in January of 1969. Trading Economics provides the current actual value, an historical data chart and related indicators for Per Capita Personal Income in Mercer County, IL - last updated from the United States Federal Reserve on June of 2024.