6 cities
| City | County | 2026 Pop. ↓ |
|---|---|---|
| Upland | San Bernardino County | 80,002 |
| Union City | Alameda County | 64,327 |
| Ukiah | Mendocino County | 15,825 |
| University of California-Santa Barbara | Santa Barbara County | 14,319 |
| University of California-Davis | Solano County | 8,705 |
| Upper Lake | Lake County | 1,239 |