Single-Parent Households with Children as a Percentage of Households with Children (5-year estimate) in Williamson County, IL was 37.04% in January of 2022, according to the United States Federal Reserve. Historically, Single-Parent Households with Children as a Percentage of Households with Children (5-year estimate) in Williamson County, IL reached a record high of 39.18 in January of 2020 and a record low of 33.15 in January of 2014. Trading Economics provides the current actual value, an historical data chart and related indicators for Single-Parent Households with Children as a Percentage of Households with Children (5-year estimate) in Williamson County, IL - last updated from the United States Federal Reserve on May of 2024.