Arlington County Flag

Arlington County

State:
Virginia
County Seat:
Arlington

Arlington County's 2026 population is estimated at 248,175, reflecting a 1.74% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Arlington County is the 8th largest county in Virginia. The 2010 population was 209,319 and has grown 18.56% since 2010.

248,175
Total Population
9,545
Population Density (mi²)
8
Population Rank (State)
4.2K 1.74%
Annual Population Growth

Arlington County Population

Demographics

Economics and Income Statistics