Vienna
- County:
- Fairfax County
- County Seat:
- No
- Area (mi²):
- 4.403
- State:
- Virginia
Vienna is a town located in Fairfax County, Virginia. Vienna has a 2026 population of 16,562. Vienna is currently growing at a rate of 1.17% annually and its population has increased by 0.69% since the most recent census, which recorded a population of 16,448 in 2020.