Chicago-Naperville-Arlington Heights, IL - S&P/Case-Shiller IL-Chicago Home Price Index was 227.32055 Index Jan 2000 = 100 in February of 2026, according to the United States Federal Reserve. Historically, Chicago-Naperville-Arlington Heights, IL - S&P/Case-Shiller IL-Chicago Home Price Index reached a record high of 227.32055 in February of 2026 and a record low of 54.20648 in January of 1987. Trading Economics provides the current actual value, an historical data chart and related indicators for Chicago-Naperville-Arlington Heights, IL - S&P/Case-Shiller IL-Chicago Home Price Index - last updated from the United States Federal Reserve on June of 2026.