| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Eau Claire | 1 | 73,134 | 69,492 | 0.92% | 2,131 | 34 | City |
| Altoona | 2 | 9,592 | 8,413 | 2.3% | 1,860 | 5 | City |
| Augusta | 3 | 1,463 | 1,572 | -1.35% | 661 | 2 | City |
| Fall Creek | 4 | 1,380 | 1,426 | -0.72% | 673 | 2 | Village |
| Fairchild | 5 | 430 | 449 | -1.15% | 296 | 1 | Village |
Eau Claire is the largest city in Eau Claire County, with a population of 73,134.
Fairchild is the smallest city in Eau Claire County, with a population of 430.
There are 5 cities in Eau Claire County, Wisconsin.