| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Rio Rancho | 1 | 116,418 | 104,451 | 1.75% | 1,126 | 103 | City |
| Bernalillo | 2 | 9,193 | 9,009 | 0.37% | 1,748 | 5 | Town |
| Corrales | 3 | 8,489 | 8,497 | 0.06% | 787 | 11 | Village |
| Cuba | 4 | 642 | 630 | 0.31% | 197 | 3 | Village |
| Jemez Springs | 5 | 205 | 202 | 0% | 43 | 5 | Village |
| San Ysidro | 6 | 169 | 167 | 0% | 72 | 2 | Village |
Rio Rancho is the largest city in Sandoval County, with a population of 116,418.
San Ysidro is the smallest city in Sandoval County, with a population of 169.
There are 6 cities in Sandoval County, New Mexico.