| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Richland Center | 1 | 4,986 | 5,192 | -0.68% | 1,062 | 5 | City |
| Lone Rock | 2 | 828 | 833 | 0% | 832 | 1 | Village |
| Viola | 3 | 745 | 667 | 2.34% | 748 | 1 | Village |
| Cazenovia | 4 | 348 | 362 | -0.57% | 380 | 1 | Village |
Richland Center is the largest city in Richland County, with a population of 4,986.
Cazenovia is the smallest city in Richland County, with a population of 348.
There are 4 cities in Richland County, Wisconsin.