17 cities
| City | Rank | County | 2026 Pop. ↓ |
|---|---|---|---|
| Yuma | 1 | Yuma County | 106,667 |
| San Luis | 2 | Yuma County | 42,210 |
| Fortuna Foothills | 3 | Yuma County | 28,680 |
| Somerton | 4 | Yuma County | 15,235 |
| Avenue B and C | 5 | Yuma County | 3,751 |
| Wellton | 6 | Yuma County | 2,780 |
| Gadsden | 7 | Yuma County | 700 |
| Rancho Mesa Verde | 8 | Yuma County | 434 |
| Tacna | 9 | Yuma County | 424 |
| Donovan Estates | 10 | Yuma County | 419 |
| Wall Lane | 11 | Yuma County | 377 |
| El Prado Estates | 12 | Yuma County | 364 |
| Yuma Proving Ground | 13 | Yuma County | 354 |
| Wellton Hills | 14 | Yuma County | 247 |
| Dateland | 15 | Yuma County | 175 |
| Orange Grove Mobile Manor | 16 | Yuma County | 145 |
| Drysdale | 17 | Yuma County | 18 |
Yuma County is the county generally considered as Southwest Arizona.