Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)
City | Rank | 2024 Pop. | 2020 Pop. | Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Tucson | 1 | 548,772 | 542,638 | 0.28% | 2,266 | 242.2 | City |
| Casas Adobes | 2 | 70,437 | 70,516 | 0.37% | 2,656 | 26.5 | CDP |
| Marana | 3 | 60,366 | 52,622 | 3.31% | 498 | 121.1 | Town |
| Catalina Foothills | 4 | 50,536 | 50,631 | -0.04% | 1,208 | 41.8 | CDP |
| Oro Valley | 5 | 48,674 | 47,222 | 0.75% | 1,388 | 35.1 | Town |
| Sahuarita | 6 | 37,022 | 34,356 | 1.83% | 1,169 | 31.7 | Town |
| Drexel Heights | 7 | 30,672 | 30,780 | 0.69% | 1,594 | 19.2 | CDP |
| Green Valley | 8 | 20,861 | 20,857 | -0.18% | 1,057 | 19.7 | CDP |
| Flowing Wells | 9 | 17,316 | 17,227 | 0.37% | 4,546 | 3.8 | CDP |
| Vail | 10 | 16,088 | 14,099 | 2.68% | 709 | 22.7 | CDP |
| Tanque Verde | 11 | 14,467 | 15,446 | -1.19% | 448 | 32.3 | CDP |
| Valencia West | 12 | 14,415 | 12,201 | 2.58% | 1,514 | 9.5 | CDP |
| Tucson Mountains | 13 | 13,033 | 11,827 | 7.69% | 495 | 26.3 | CDP |
| Tucson Estates | 14 | 12,896 | 12,198 | 0.4% | 1,013 | 12.7 | CDP |
| Corona Tucson | 15 | 9,253 | 9,492 | 2.83% | 1,205 | 7.7 | CDP |
| Picture Rocks | 16 | 9,207 | 8,955 | -0.28% | 130 | 70.8 | CDP |
| Avra Valley | 17 | 6,320 | 6,285 | 0.32% | 282 | 22.4 | CDP |
| Catalina | 18 | 6,171 | 6,738 | -1.59% | 436 | 14.1 | CDP |
| Rincon Valley | 19 | 5,808 | 5,337 | 0.83% | 228 | 25.4 | CDP |
| Three Points | 20 | 5,020 | 4,620 | -0.79% | 108 | 46.6 | CDP |
| Summit | 21 | 4,964 | 5,066 | -0.58% | 1,357 | 3.7 | CDP |
| South Tucson | 22 | 4,489 | 4,616 | -0.71% | 4,371 | 1.0 | City |
| Ajo | 23 | 2,858 | 2,691 | -1.11% | 86 | 33.3 | CDP |
| Sells | 24 | 2,410 | 2,453 | -0.25% | 261 | 9.2 | CDP |
| Santa Rosa | 25 | 769 | 643 | 1.32% | 118 | 6.5 | CDP |
| Arivaca Junction | 26 | 525 | 1,072 | -7.24% | 178 | 3.0 | CDP |
| Elephant Head | 27 | 501 | 558 | -1.57% | 69 | 7.3 | CDP |
| Arivaca | 28 | 496 | 692 | -2.74% | 18 | 27.8 | CDP |
| Topawa | 29 | 465 | 382 | 2.65% | 90 | 5.1 | CDP |
| Nelson | 30 | 408 | 775 | 2.51% | 861 | 0.5 | CDP |
| Pisinemo | 31 | 358 | 282 | 0.56% | 158 | 2.3 | CDP |
| San Miguel | 32 | 334 | 290 | 3.09% | 59 | 5.7 | CDP |
| Gu Oidak | 33 | 187 | 126 | 0% | 27 | 6.9 | CDP |
| Haivana Nakya | 34 | 184 | 232 | 7.6% | 99 | 1.9 | CDP |
| South Komelik | 35 | 179 | 455 | 2.87% | 46 | 3.9 | CDP |
| Ali Chuk | 36 | 113 | 159 | -3.42% | 78 | 1.4 | CDP |
| Anegam | 37 | 109 | 97 | -2.68% | 47 | 2.3 | CDP |
| Chiawuli Tak | 38 | 105 | 0 | 7.14% | 43 | 2.4 | CDP |
| Ali Molina | 39 | 103 | 66 | 8.42% | 134 | 0.8 | CDP |
| Ali Chukson | 40 | 63 | 49 | -7.35% | 30 | 2.1 | CDP |
| Kleindale | 41 | 55 | 71 | 7.84% | 396 | 0.1 | CDP |
| Ko Vaya | 42 | 46 | 26 | 9.52% | 42 | 1.1 | CDP |
| Maish Vaya | 43 | 45 | 179 | -15.09% | 11 | 4.2 | CDP |
| Wahak Hotrontk | 44 | 35 | 37 | -12.5% | 23 | 1.5 | CDP |
| Summerhaven | 45 | 30 | 35 | 7.14% | 7 | 4.6 | CDP |
Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.
Tucson is the largest city in Pima County.
Summerhaven is the smallest city in Pima County.
There are 45 cities in Pima County, Arizona.