17 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Los Lunas | 1 | 20,523 | 17,376 | 3.09% | 1,008 | 20 | Village |
| Los Lunas | 2 | 20,523 | 17,440 | 3.09% | 1,008 | 20 | Village |
| Belen | 3 | 7,604 | 7,351 | 0.64% | 400 | 19 | City |
| Belen | 4 | 7,604 | 7,362 | 0.64% | 400 | 19 | City |
| El Cerro Mission | 5 | 5,084 | 4,808 | 0.55% | 864 | 6 | CDP |
| Meadow Lake | 6 | 4,754 | 4,266 | 0.06% | 412 | 12 | CDP |
| Bosque Farms | 7 | 4,166 | 4,017 | 0.68% | 1,059 | 4 | Village |
| Bosque Farms | 8 | 4,166 | 4,023 | 0.68% | 1,059 | 4 | Village |
| Peralta | 9 | 3,499 | 3,348 | 0.84% | 788 | 4 | Town |
| Peralta | 10 | 3,499 | 3,354 | 0.84% | 788 | 4 | Town |
| El Cerro | 11 | 3,317 | 3,138 | 0.76% | 781 | 4 | CDP |
| Valencia | 12 | 1,967 | 1,995 | -0.76% | 991 | 2 | CDP |
| Las Maravillas | 13 | 1,838 | 1,960 | 0.77% | 1,820 | 1 | CDP |
| Jarales | 14 | 1,494 | 2,207 | -4.17% | 171 | 9 | CDP |
| Tome | 15 | 800 | 1,585 | -8.15% | 145 | 6 | CDP |
| Adelino | 16 | 782 | 1,110 | -0.26% | 262 | 3 | CDP |
| Monterey Park | 17 | 338 | 1,097 | -19.52% | 128 | 3 | CDP |
Los Lunas is the largest city in Valencia County, with a population of 20,523.
Monterey Park is the smallest city in Valencia County, with a population of 338.
There are 17 cities in Valencia County, New Mexico.