| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Los Lunas | 1 | 21,194 | 17,454 | 3.02% | 1,041 | 20 | Village |
| Belen | 2 | 7,637 | 7,348 | 0.63% | 402 | 19 | City |
| Bosque Farms | 3 | 4,203 | 4,024 | 0.69% | 1,068 | 4 | Village |
| Peralta | 4 | 3,527 | 3,358 | 0.8% | 794 | 4 | Town |
Los Lunas is the largest city in Valencia County, with a population of 21,194.
Peralta is the smallest city in Valencia County, with a population of 3,527.
There are 4 cities in Valencia County, New Mexico.