Unemployment Rate in Fairfax County, VA was 3.40% in May of 2026, according to the United States Federal Reserve. Historically, Unemployment Rate in Fairfax County, VA reached a record high of 10.30 in April of 2020 and a record low of 1.20 in April of 1998. Trading Economics provides the current actual value, an historical data chart and related indicators for Unemployment Rate in Fairfax County, VA - last updated from the United States Federal Reserve on July of 2026.