All-Transactions House Price Index for New Castle County, DE was 234.25000 Index 2000=100 in January of 2023, according to the United States Federal Reserve. Historically, All-Transactions House Price Index for New Castle County, DE reached a record high of 234.25000 in January of 2023 and a record low of 29.32000 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 New Castle County, DE - last updated from the United States Federal Reserve on May of 2024.