10 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Eau Claire | 1 | 73,041 | 69,449 | 0.98% | 2,128 | 34 | City |
| Eau Claire | 2 | 73,041 | 69,491 | 0.98% | 2,128 | 34 | City |
| Altoona | 3 | 9,524 | 8,289 | 2.39% | 1,918 | 5 | City |
| Altoona | 4 | 9,524 | 8,414 | 2.39% | 1,918 | 5 | City |
| Augusta | 5 | 1,475 | 1,575 | -1.34% | 666 | 2 | City |
| Augusta | 6 | 1,475 | 1,572 | -1.34% | 666 | 2 | City |
| Fall Creek | 7 | 1,382 | 1,427 | -0.65% | 674 | 2 | Village |
| Fall Creek | 8 | 1,382 | 1,427 | -0.65% | 674 | 2 | Village |
| Fairchild | 9 | 429 | 450 | -0.92% | 295 | 1 | Village |
| Fairchild | 10 | 429 | 449 | -0.92% | 295 | 1 | Village |
Eau Claire is the largest city in Eau Claire County, with a population of 73,041.
Fairchild is the smallest city in Eau Claire County, with a population of 429.
There are 10 cities in Eau Claire County, Wisconsin.