8 cities
| City | County | 2026 Pop. ↓ |
|---|---|---|
| Ohkay Owingeh | Rio Arriba County | 1,186 |
| Ojo Encino | McKinley County | 555 |
| Ojo Amarillo | San Juan County | 291 |
| Ojo Sarco | Rio Arriba County | 188 |
| Oasis | Sierra County | 117 |
| Ojo Caliente | Taos County | 112 |
| Organ | Doña Ana County | 111 |
| Orogrande | Otero County | 11 |