1 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Arlington | 1 | 242,900 | 236,434 | 0.98% | 9,343 | 26 | CDP |
Arlington is the largest city in Arlington County, with a population of 242,900.
Arlington is the smallest city in Arlington County.
There is 1 city in Arlington County, Virginia.