17 cities
| City | Rank | County | 2025 Pop. ↓ |
|---|---|---|---|
| Yuma | 1 | Yuma County | 105,113 |
| San Luis | 2 | Yuma County | 41,137 |
| Fortuna Foothills | 3 | Yuma County | 27,874 |
| Somerton | 4 | Yuma County | 15,068 |
| Avenue B C | 5 | Yuma County | 3,769 |
| Wellton | 6 | Yuma County | 2,714 |
| Gadsden | 7 | Yuma County | 807 |
| Rancho Mesa Verde | 8 | Yuma County | 593 |
| Tacna | 9 | Yuma County | 504 |
| Donovan Estates | 10 | Yuma County | 493 |
| Yuma Proving Ground | 11 | Yuma County | 391 |
| El Prado Estates | 12 | Yuma County | 363 |
| Dateland | 13 | Yuma County | 322 |
| Wall Lane | 14 | Yuma County | 286 |
| Wellton Hills | 15 | Yuma County | 177 |
| Drysdale | 16 | Yuma County | 92 |
| Orange Grove Mobile Manor | 17 | Yuma County | 58 |
Yuma County is the county generally considered as Southwest Arizona.