Fairfax County Flag

Fairfax County

State:
Virginia
County Seat:
Fairfax

Fairfax County's estimated 2025 population is 1,175,173 with a growth rate of 1.23% in the past year according to the most recent United States census data. Fairfax County is the largest county in Virginia. The 2010 population was 1,086,165 and has seen a growth of 8.19% since that time.

1,175,173
Total Population
3,006
Population Density (mi²)
1
Population Rank (State)
14.2K 1.23%
Annual Population Growth

Fairfax County Population

Demographics

Economics and Income Statistics

Sources

  1. City and Town Population Totals: 2020-2024
  2. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  3. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  4. American Community Survey (2009 - 2013)
  5. Census QuickFacts
  6. Historical Populations of States and Counties (1790 - 1990)