44 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Tucson | 1 | 556,854 | 542,649 | 0.51% | 2,299 | 242 | City |
| Casas Adobes | 2 | 70,698 | 70,516 | 0.37% | 2,666 | 27 | CDP |
| Marana | 3 | 64,818 | 52,626 | 3.91% | 535 | 121 | Town |
| Catalina Foothills | 4 | 50,517 | 50,631 | -0.04% | 1,208 | 42 | CDP |
| Oro Valley | 5 | 49,262 | 47,226 | 0.83% | 1,405 | 35 | Town |
| Sahuarita | 6 | 38,221 | 34,356 | 2.06% | 1,206 | 32 | Town |
| Drexel Heights | 7 | 30,880 | 30,780 | 0.68% | 1,604 | 19 | CDP |
| Green Valley | 8 | 20,824 | 20,857 | -0.18% | 1,055 | 20 | CDP |
| Flowing Wells | 9 | 17,380 | 17,227 | 0.37% | 4,563 | 4 | CDP |
| Vail | 10 | 16,508 | 14,099 | 2.61% | 728 | 23 | CDP |
| Valencia West | 11 | 14,776 | 12,201 | 2.5% | 1,551 | 10 | CDP |
| Tanque Verde | 12 | 14,293 | 15,446 | -1.2% | 443 | 32 | CDP |
| Tucson Mountains | 13 | 13,964 | 11,827 | 7.14% | 531 | 26 | CDP |
| Tucson Estates | 14 | 12,946 | 12,198 | 0.39% | 1,017 | 13 | CDP |
| Corona Tucson | 15 | 9,509 | 9,492 | 2.77% | 1,238 | 8 | CDP |
| Picture Rocks | 16 | 9,182 | 8,955 | -0.27% | 130 | 71 | CDP |
| Avra Valley | 17 | 6,339 | 6,285 | 0.3% | 283 | 22 | CDP |
| Catalina | 18 | 6,072 | 6,738 | -1.6% | 429 | 14 | CDP |
| Rincon Valley | 19 | 5,855 | 5,337 | 0.81% | 230 | 25 | CDP |
| Three Points | 20 | 4,980 | 4,620 | -0.8% | 107 | 47 | CDP |
| Summit | 21 | 4,934 | 5,066 | -0.6% | 1,348 | 4 | CDP |
| South Tucson | 22 | 4,514 | 4,616 | -0.46% | 4,395 | 1 | City |
| Ajo | 23 | 2,826 | 2,691 | -1.12% | 85 | 33 | CDP |
| Sells | 24 | 2,404 | 2,453 | -0.25% | 260 | 9 | CDP |
| Santa Rosa | 25 | 779 | 643 | 1.3% | 120 | 7 | CDP |
| Elephant Head | 26 | 493 | 558 | -1.6% | 68 | 7 | CDP |
| Arivaca Junction | 27 | 485 | 1,072 | -7.62% | 164 | 3 | CDP |
| Arivaca | 28 | 481 | 692 | -3.02% | 17 | 28 | CDP |
| Topawa | 29 | 476 | 382 | 2.37% | 92 | 5 | CDP |
| Nelson | 30 | 419 | 775 | 2.7% | 884 | 0 | CDP |
| Pisinemo | 31 | 361 | 282 | 0.84% | 159 | 2 | CDP |
| San Miguel | 32 | 343 | 290 | 2.69% | 61 | 6 | CDP |
| Haivana Nakya | 33 | 197 | 232 | 7.07% | 106 | 2 | CDP |
| Gu Oidak | 34 | 187 | 126 | 0% | 27 | 7 | CDP |
| South Komelik | 35 | 184 | 455 | 2.79% | 47 | 4 | CDP |
| Ali Chuk | 36 | 110 | 159 | -2.65% | 76 | 1 | CDP |
| Ali Molina | 37 | 110 | 66 | 6.8% | 143 | 1 | CDP |
| Anegam | 38 | 106 | 97 | -2.75% | 46 | 2 | CDP |
| Kleindale | 39 | 59 | 71 | 7.27% | 424 | 0 | CDP |
| Ali Chukson | 40 | 58 | 49 | -7.94% | 28 | 2 | CDP |
| Ko Vaya | 41 | 49 | 26 | 6.52% | 45 | 1 | CDP |
| Maish Vaya | 42 | 37 | 179 | -17.78% | 9 | 4 | CDP |
| Summerhaven | 43 | 32 | 35 | 6.67% | 7 | 5 | CDP |
| Wahak Hotrontk | 44 | 29 | 37 | -17.14% | 19 | 2 | CDP |
Tucson is the largest city in Pima County, with a population of 556,854.
Wahak Hotrontk is the smallest city in Pima County, with a population of 29.
There are 44 cities in Pima County, Arizona.