| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| River Falls | 1 | 18,277 | 16,306 | 2.01% | 2,451 | 7 | City |
| Prescott | 2 | 4,643 | 4,327 | 1.35% | 1,638 | 3 | City |
| Ellsworth | 3 | 3,336 | 3,341 | 0% | 879 | 4 | Village |
| Spring Valley | 4 | 1,453 | 1,403 | 0.69% | 366 | 4 | Village |
| Elmwood | 5 | 802 | 813 | -0.37% | 529 | 2 | Village |
| Plum City | 6 | 584 | 596 | -0.51% | 560 | 1 | Village |
| Bay City | 7 | 448 | 442 | 0.22% | 758 | 1 | Village |
| Maiden Rock | 8 | 118 | 116 | 0% | 98 | 1 | Village |
River Falls is the largest city in Pierce County, with a population of 18,277.
Maiden Rock is the smallest city in Pierce County, with a population of 118.
There are 8 cities in Pierce County, Wisconsin.