Percent of Population Below the Poverty Level (5-year estimate) in McDonough County, IL was 19.80% in January of 2022, according to the United States Federal Reserve. Historically, Percent of Population Below the Poverty Level (5-year estimate) in McDonough County, IL reached a record high of 24.20 in January of 2014 and a record low of 19.40 in January of 2021. Trading Economics provides the current actual value, an historical data chart and related indicators for Percent of Population Below the Poverty Level (5-year estimate) in McDonough County, IL - last updated from the United States Federal Reserve on May of 2024.