| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| El Centro | 1 | 44,415 | 44,420 | 0.07% | 3,666 | 12 | City |
| Calexico | 2 | 38,704 | 38,560 | 0.21% | 4,572 | 8 | City |
| Brawley | 3 | 28,429 | 26,496 | 1.5% | 3,515 | 8 | City |
| Imperial | 4 | 22,770 | 20,457 | 1.97% | 3,611 | 6 | City |
| Calipatria | 5 | 5,971 | 6,724 | -0.68% | 1,603 | 4 | City |
| Holtville | 6 | 5,602 | 5,595 | 0.2% | 4,901 | 1 | City |
| Westmorland | 7 | 2,021 | 2,011 | 0.3% | 3,319 | 1 | City |
El Centro is the largest city in Imperial County, with a population of 44,415.
Westmorland is the smallest city in Imperial County, with a population of 2,021.
There are 7 cities in Imperial County, California.