Homeownership (5-year estimate) for Williamson County, IL was 74.33798 Rate in January of 2022, according to the United States Federal Reserve. Historically, Homeownership (5-year estimate) for Williamson County, IL reached a record high of 75.77148 in January of 2010 and a record low of 72.75946 in January of 2018. Trading Economics provides the current actual value, an historical data chart and related indicators for Homeownership (5-year estimate) for Williamson County, IL - last updated from the United States Federal Reserve on May of 2024.