44 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Tucson | 1 | 550,306 | 542,638 | 0.28% | 2,272 | 242.19 | City |
| Casas Adobes | 2 | 70,698 | 70,516 | 0.37% | 2,666 | 26.52 | CDP |
| Marana | 3 | 62,302 | 52,622 | 3.21% | 514 | 121.10 | Town |
| Catalina Foothills | 4 | 50,517 | 50,631 | -0.04% | 1,208 | 41.83 | CDP |
| Oro Valley | 5 | 49,037 | 47,222 | 0.75% | 1,399 | 35.06 | Town |
| Sahuarita | 6 | 37,689 | 34,356 | 1.8% | 1,190 | 31.68 | Town |
| Drexel Heights | 7 | 30,880 | 30,780 | 0.68% | 1,604 | 19.25 | CDP |
| Green Valley | 8 | 20,824 | 20,857 | -0.18% | 1,055 | 19.73 | CDP |
| Flowing Wells | 9 | 17,380 | 17,227 | 0.37% | 4,563 | 3.81 | CDP |
| Vail | 10 | 16,508 | 14,099 | 2.61% | 728 | 22.68 | CDP |
| Valencia West | 11 | 14,776 | 12,201 | 2.5% | 1,551 | 9.52 | CDP |
| Tanque Verde | 12 | 14,293 | 15,446 | -1.2% | 443 | 32.28 | CDP |
| Tucson Mountains | 13 | 13,964 | 11,827 | 7.14% | 531 | 26.32 | CDP |
| Tucson Estates | 14 | 12,946 | 12,198 | 0.39% | 1,017 | 12.72 | CDP |
| Corona Tucson | 15 | 9,509 | 9,492 | 2.77% | 1,238 | 7.68 | CDP |
| Picture Rocks | 16 | 9,182 | 8,955 | -0.27% | 130 | 70.84 | CDP |
| Avra Valley | 17 | 6,339 | 6,285 | 0.3% | 283 | 22.37 | CDP |
| Catalina | 18 | 6,072 | 6,738 | -1.6% | 429 | 14.14 | CDP |
| Rincon Valley | 19 | 5,855 | 5,337 | 0.81% | 230 | 25.44 | CDP |
| Three Points | 20 | 4,980 | 4,620 | -0.8% | 107 | 46.62 | CDP |
| Summit | 21 | 4,934 | 5,066 | -0.6% | 1,348 | 3.66 | CDP |
| South Tucson | 22 | 4,457 | 4,616 | -0.71% | 4,340 | 1.03 | City |
| Ajo | 23 | 2,826 | 2,691 | -1.12% | 85 | 33.33 | CDP |
| Sells | 24 | 2,404 | 2,453 | -0.25% | 260 | 9.23 | CDP |
| Santa Rosa | 25 | 779 | 643 | 1.3% | 120 | 6.51 | CDP |
| Elephant Head | 26 | 493 | 558 | -1.6% | 68 | 7.25 | CDP |
| Arivaca Junction | 27 | 485 | 1,072 | -7.62% | 164 | 2.95 | CDP |
| Arivaca | 28 | 481 | 692 | -3.02% | 17 | 27.78 | CDP |
| Topawa | 29 | 476 | 382 | 2.37% | 92 | 5.15 | CDP |
| Nelson | 30 | 419 | 775 | 2.7% | 884 | 0.47 | CDP |
| Pisinemo | 31 | 361 | 282 | 0.84% | 159 | 2.27 | CDP |
| San Miguel | 32 | 343 | 290 | 2.69% | 61 | 5.65 | CDP |
| Haivana Nakya | 33 | 197 | 232 | 7.07% | 106 | 1.86 | CDP |
| Gu Oidak | 34 | 187 | 126 | 0% | 27 | 6.92 | CDP |
| South Komelik | 35 | 184 | 455 | 2.79% | 47 | 3.90 | CDP |
| Ali Chuk | 36 | 110 | 159 | -2.65% | 76 | 1.44 | CDP |
| Ali Molina | 37 | 110 | 66 | 6.8% | 143 | 0.77 | CDP |
| Anegam | 38 | 106 | 97 | -2.75% | 46 | 2.31 | CDP |
| Kleindale | 39 | 59 | 71 | 7.27% | 424 | 0.14 | CDP |
| Ali Chukson | 40 | 58 | 49 | -7.94% | 28 | 2.07 | CDP |
| Ko Vaya | 41 | 49 | 26 | 6.52% | 45 | 1.10 | CDP |
| Maish Vaya | 42 | 37 | 179 | -17.78% | 9 | 4.24 | CDP |
| Summerhaven | 43 | 32 | 35 | 6.67% | 7 | 4.60 | CDP |
| Wahak Hotrontk | 44 | 29 | 37 | -17.14% | 19 | 1.54 | CDP |
Tucson is the largest city in Pima County, with a population of 550,306.
Wahak Hotrontk is the smallest city in Pima County.
There are 44 cities in Pima County, Arizona.