All-Transactions House Price Index for McHenry County, IL was 166.42000 Index 2000=100 in January of 2023, according to the United States Federal Reserve. Historically, All-Transactions House Price Index for McHenry County, IL reached a record high of 166.42000 in January of 2023 and a record low of 27.41000 in January of 1975. Trading Economics provides the current actual value, an historical data chart and related indicators for All-Transactions House Price Index for McHenry County, IL - last updated from the United States Federal Reserve on May of 2024.