8 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Ohkay Owingeh | Rio Arriba County | 1,183 |
| Ojo Encino | McKinley County | 520 |
| Ojo Amarillo | San Juan County | 321 |
| Ojo Sarco | Rio Arriba County | 177 |
| Organ | Doña Ana County | 125 |
| Oasis | Sierra County | 119 |
| Ojo Caliente | Taos County | 105 |
| Orogrande | Otero County | 10 |