All-Transactions House Price Index for Nassau County, NY was 299.95000 Index 2000=100 in January of 2025, according to the United States Federal Reserve. Historically, All-Transactions House Price Index for Nassau County, NY reached a record high of 299.95000 in January of 2025 and a record low of 16.30000 in January of 1976. Trading Economics provides the current actual value, an historical data chart and related indicators for All-Transactions House Price Index for Nassau County, NY - last updated from the United States Federal Reserve on June of 2026.