All-Transactions House Price Index for Fairfax County, VA was 319.72000 Index 2000=100 in January of 2025, according to the United States Federal Reserve. Historically, All-Transactions House Price Index for Fairfax County, VA reached a record high of 319.72000 in January of 2025 and a record low of 25.61000 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 Fairfax County, VA - last updated from the United States Federal Reserve on May of 2026.