| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Watertown | 1 | 22,644 | 22,980 | -0.26% | 1,877 | 12 | City |
| Beaver Dam | 2 | 16,490 | 16,727 | -0.31% | 1,873 | 9 | City |
| Waupun | 3 | 11,050 | 11,574 | -0.9% | 2,366 | 5 | City |
| Mayville | 4 | 5,191 | 5,161 | 0.14% | 1,595 | 3 | City |
| Horicon | 5 | 3,949 | 3,781 | 0.82% | 1,128 | 4 | City |
| Juneau | 6 | 2,719 | 2,654 | 0.48% | 1,649 | 2 | City |
| Lomira | 7 | 2,685 | 2,676 | -0.04% | 1,223 | 2 | Village |
| Fox Lake | 8 | 1,707 | 1,602 | 1.25% | 1,037 | 2 | City |
| Theresa | 9 | 1,354 | 1,252 | 0.59% | 1,835 | 1 | Village |
| Hustisford | 10 | 1,071 | 1,095 | -0.46% | 961 | 1 | Village |
| Iron Ridge | 11 | 921 | 902 | 0.33% | 1,373 | 1 | Village |
| Kekoskee | 12 | 910 | 923 | -0.22% | 29 | 32 | Village |
| Reeseville | 13 | 762 | 761 | 0% | 1,219 | 1 | Village |
| Brownsville | 14 | 680 | 597 | 1.95% | 1,109 | 1 | Village |
| Neosho | 15 | 574 | 585 | -0.35% | 1,091 | 1 | Village |
| Oconomowoc Lake | 16 | 569 | 572 | -0.18% | 297 | 2 | Village |
| Clyman | 17 | 391 | 398 | -0.51% | 1,043 | 0 | Village |
| Lowell | 18 | 294 | 305 | -0.68% | 297 | 1 | Village |
| Lac La Belle | 19 | 273 | 279 | -0.36% | 247 | 1 | Village |
Watertown is the largest city in Dodge County, with a population of 22,644.
Lac La Belle is the smallest city in Dodge County, with a population of 273.
There are 19 cities in Dodge County, Wisconsin.