19 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Harrison | 1 | 14,670 | 12,415 | 2.92% | 460 | 32 | Village |
| Harrison | 2 | 14,670 | 12,590 | 2.92% | 460 | 32 | Village |
| Chilton | 3 | 4,213 | 4,087 | 0.72% | 1,043 | 4 | City |
| Chilton | 4 | 4,213 | 4,061 | 0.72% | 1,043 | 4 | City |
| Brillion | 5 | 3,326 | 3,269 | 0.24% | 1,076 | 3 | City |
| Brillion | 6 | 3,326 | 3,285 | 0.24% | 1,076 | 3 | City |
| Sherwood | 7 | 3,287 | 3,273 | 0.15% | 950 | 3 | Village |
| Sherwood | 8 | 3,287 | 3,260 | 0.15% | 950 | 3 | Village |
| New Holstein | 9 | 3,020 | 3,193 | -1.02% | 1,204 | 3 | City |
| New Holstein | 10 | 3,020 | 3,173 | -1.02% | 1,204 | 3 | City |
| St. Peter | 11 | 1,334 | 1,362 | -0.74% | 367 | 4 | CDP |
| Hilbert | 12 | 1,210 | 1,246 | -0.58% | 821 | 1 | Village |
| Hilbert | 13 | 1,210 | 1,243 | -0.58% | 821 | 1 | Village |
| Forest Junction | 14 | 708 | 681 | 0.85% | 275 | 3 | CDP |
| Stockbridge | 15 | 652 | 686 | -1.06% | 199 | 3 | Village |
| Stockbridge | 16 | 652 | 684 | -1.06% | 199 | 3 | Village |
| Brothertown | 17 | 330 | 205 | 7.14% | 275 | 1 | CDP |
| Potter | 18 | 229 | 244 | -1.29% | 453 | 1 | Village |
| Potter | 19 | 229 | 242 | -1.29% | 453 | 1 | Village |
Harrison is the largest city in Calumet County, with a population of 14,670.
Potter is the smallest city in Calumet County, with a population of 229.
There are 19 cities in Calumet County, Wisconsin.