4 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Los Lunas | 1 | 20,523 | 17,440 | 3.09% | 1,008 | 20 | Village |
| Belen | 2 | 7,604 | 7,362 | 0.64% | 400 | 19 | City |
| Bosque Farms | 3 | 4,166 | 4,023 | 0.68% | 1,059 | 4 | Village |
| Peralta | 4 | 3,499 | 3,354 | 0.84% | 788 | 4 | Town |
Los Lunas is the largest city in Valencia County, with a population of 20,523.
Peralta is the smallest city in Valencia County, with a population of 3,499.
There are 4 cities in Valencia County, New Mexico.