Loudoun County Flag

Loudoun County

State:
Virginia
County Seat:
Leesburg

Loudoun County's estimated 2026 population is 455,749 with a growth rate of 1.33% in the past year according to the most recent United States census data. Loudoun County is the 3rd largest county in Virginia. The 2010 population was 315,486 and has seen a growth of 44.46% since that time.

455,749
Total Population
883
Population Density (mi²)
3
Population Rank (State)
6K 1.33%
Annual Population Growth

Loudoun County Population

Demographics

Economics and Income Statistics