5 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Eau Claire | 1 | 73,751 | 69,491 | 0.97% | 2,148 | 34 | City |
| Altoona | 2 | 9,746 | 8,414 | 2.33% | 1,890 | 5 | City |
| Augusta | 3 | 1,456 | 1,572 | -1.29% | 658 | 2 | City |
| Fall Creek | 4 | 1,373 | 1,427 | -0.65% | 670 | 2 | Village |
| Fairchild | 5 | 425 | 449 | -0.93% | 292 | 1 | Village |
Eau Claire is the largest city in Eau Claire County, with a population of 73,751.
Fairchild is the smallest city in Eau Claire County, with a population of 425.
There are 5 cities in Eau Claire County, Wisconsin.