Leesburg
- County:
- Loudoun County
- County Seat:
- Yes
- Area (mi²):
- 12.585
- State:
- Virginia
Leesburg is a town located in Loudoun County, Virginia. Leesburg has a 2026 population of 49,831. It is also the county seat of Loudoun County. Leesburg is currently growing at a rate of 0.73% annually and its population has increased by 2.87% since the most recent census, which recorded a population of 48,443 in 2020.