19 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| El Centro | 1 | 43,324 | 44,444 | -0.51% | 3,575 | 12.12 | City |
| Calexico | 2 | 37,985 | 38,582 | -0.31% | 4,487 | 8.47 | City |
| Brawley | 3 | 28,742 | 26,509 | 1.58% | 3,553 | 8.09 | City |
| Imperial | 4 | 22,339 | 20,469 | 1.7% | 3,542 | 6.31 | City |
| Heber | 5 | 8,819 | 8,413 | 3.56% | 6,141 | 1.44 | CDP |
| Salton City | 6 | 6,812 | 5,975 | 3.09% | 318 | 21.44 | CDP |
| Calipatria | 7 | 5,830 | 6,724 | -2.98% | 1,565 | 3.73 | City |
| Holtville | 8 | 5,527 | 5,597 | -0.25% | 4,836 | 1.14 | City |
| Westmorland | 9 | 1,958 | 2,015 | -0.56% | 3,215 | 0.61 | City |
| Seeley | 10 | 1,760 | 1,847 | 0.06% | 1,252 | 1.41 | CDP |
| Mesa Verde | 11 | 902 | 753 | -0.88% | 210 | 4.30 | CDP |
| El Centro Naval Air Facility | 12 | 674 | 609 | 7.15% | 161 | 4.19 | CDP |
| Ripley | 13 | 594 | 460 | -1.16% | 349 | 1.70 | CDP |
| Niland | 14 | 501 | 743 | -6.36% | 1,246 | 0.40 | CDP |
| Bombay Beach | 15 | 229 | 215 | -1.72% | 345 | 0.66 | CDP |
| Desert Shores | 16 | 174 | 411 | -26.27% | 249 | 0.70 | CDP |
| Salton Sea Beach | 17 | 127 | 299 | -13.61% | 412 | 0.31 | CDP |
| Ocotillo | 18 | 116 | 44 | -7.94% | 13 | 8.87 | CDP |
| Palo Verde | 19 | 58 | 78 | -12.12% | 100 | 0.58 | CDP |
El Centro is the largest city in Imperial County, with a population of 43,324.
Palo Verde is the smallest city in Imperial County.
There are 19 cities in Imperial County, California.