| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Warrenton | 1 | 10,255 | 10,048 | 0.41% | 2,341 | 4 | Town |
| Remington | 2 | 654 | 620 | 0.77% | 2,986 | 0 | Town |
| The Plains | 3 | 263 | 248 | 0.77% | 953 | 0 | Town |
Warrenton is the largest city in Fauquier County, with a population of 10,255.
The Plains is the smallest city in Fauquier County, with a population of 263.
There are 3 cities in Fauquier County, Virginia.