8 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Cedar City | 1 | 42,923 | 35,470 | 3.6% | 1,188 | 36.13 | City |
| Enoch | 2 | 8,905 | 7,482 | 3.31% | 1,112 | 8.01 | City |
| Parowan | 3 | 3,289 | 3,018 | 1.67% | 478 | 6.88 | City |
| Paragonah | 4 | 575 | 542 | 1.23% | 831 | 0.69 | Town |
| Kanarraville | 5 | 497 | 446 | 2.05% | 1,117 | 0.45 | Town |
| Newcastle | 6 | 357 | 326 | 2% | 90 | 3.98 | CDP |
| Summit | 7 | 252 | 252 | 2.44% | 371 | 0.68 | CDP |
| Brian Head | 8 | 163 | 147 | 1.88% | 45 | 3.65 | Town |
Cedar City is the largest city in Iron County, with a population of 42,923.
Brian Head is the smallest city in Iron County.
There are 8 cities in Iron County, Utah.