| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Parker | 1 | 3,387 | 3,420 | -0.21% | 154 | 22 | Town |
| Quartzsite | 2 | 2,380 | 2,411 | -0.34% | 66 | 36 | Town |
Parker is the largest city in La Paz County, with a population of 3,387.
Quartzsite is the smallest city in La Paz County, with a population of 2,380.
There are 2 cities in La Paz County, Arizona.