| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Madison | 1 | 288,589 | 274,851 | 0.82% | 3,427 | 84 | City |
| Sun Prairie | 2 | 39,999 | 36,013 | 1.97% | 3,055 | 13 | City |
| Fitchburg | 3 | 35,342 | 31,298 | 2.1% | 1,004 | 35 | City |
| Middleton | 4 | 23,230 | 22,071 | 0.5% | 2,471 | 9 | City |
| Verona | 5 | 17,512 | 13,984 | 4.11% | 2,116 | 8 | City |
| Waunakee | 6 | 16,755 | 14,916 | 2.1% | 2,284 | 7 | Village |
| Stoughton | 7 | 13,237 | 13,158 | -0.14% | 2,164 | 6 | City |
| Oregon | 8 | 12,166 | 11,239 | 1.26% | 2,687 | 5 | Village |
| Windsor | 9 | 10,377 | 8,784 | 2.9% | 377 | 28 | Village |
| Cottage Grove | 10 | 9,317 | 7,385 | 4.33% | 1,987 | 5 | Village |
| McFarland | 11 | 9,178 | 9,049 | 0.36% | 1,891 | 5 | Village |
| Monona | 12 | 8,644 | 8,664 | -0.23% | 2,652 | 3 | City |
| Mount Horeb | 13 | 7,730 | 7,755 | 0.06% | 2,384 | 3 | Village |
| Cross Plains | 14 | 4,198 | 4,099 | 0.38% | 2,232 | 2 | Village |
| Marshall | 15 | 3,682 | 3,796 | -0.38% | 1,718 | 2 | Village |
| Belleville | 16 | 2,735 | 2,508 | 1.11% | 1,721 | 2 | Village |
| Deerfield | 17 | 2,650 | 2,509 | 1.18% | 1,223 | 2 | Village |
| Shorewood Hills | 18 | 2,131 | 2,270 | -1.11% | 2,654 | 1 | Village |
| Mazomanie | 19 | 1,744 | 1,768 | -0.11% | 986 | 2 | Village |
| Cambridge | 20 | 1,690 | 1,647 | 0.66% | 1,148 | 1 | Village |
| Black Earth | 21 | 1,526 | 1,496 | 0.2% | 1,808 | 1 | Village |
| Maple Bluff | 22 | 1,290 | 1,382 | -1.15% | 1,840 | 1 | Village |
| Dane | 23 | 1,116 | 1,115 | -0.27% | 943 | 1 | Village |
| Blue Mounds | 24 | 884 | 932 | -0.9% | 1,003 | 1 | Village |
| Rockdale | 25 | 199 | 210 | -1% | 708 | 0 | Village |
Madison is the largest city in Dane County, with a population of 288,589.
Rockdale is the smallest city in Dane County, with a population of 199.
There are 25 cities in Dane County, Wisconsin.