23 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Watertown | 1 | 22,530 | 22,935 | -0.36% | 1,868 | 12.06 | City |
| Beaver Dam | 2 | 16,413 | 16,707 | -0.36% | 2,211 | 7.42 | City |
| Waupun | 3 | 10,691 | 11,561 | -1.6% | 2,289 | 4.67 | City |
| Mayville | 4 | 5,104 | 5,188 | -0.33% | 1,569 | 3.25 | City |
| Horicon | 5 | 3,762 | 3,789 | -0.13% | 1,074 | 3.50 | City |
| Lomira | 6 | 2,679 | 2,681 | 0% | 1,220 | 2.20 | Village |
| Juneau | 7 | 2,456 | 2,650 | -1.56% | 1,489 | 1.65 | City |
| Fox Lake | 8 | 1,604 | 1,601 | 0.06% | 974 | 1.65 | City |
| Theresa | 9 | 1,258 | 1,252 | 0.08% | 1,705 | 0.74 | Village |
| Ashippun | 10 | 1,110 | 1,027 | 4.82% | 1,080 | 1.03 | CDP |
| Hustisford | 11 | 1,074 | 1,096 | -0.37% | 963 | 1.11 | Village |
| Iron Ridge | 12 | 917 | 904 | 0.33% | 1,367 | 0.67 | Village |
| Kekoskee | 13 | 891 | 893 | 0% | 28 | 31.43 | Village |
| Reeseville | 14 | 745 | 762 | -0.4% | 1,192 | 0.63 | Village |
| Brownsville | 15 | 683 | 598 | 2.55% | 1,114 | 0.61 | Village |
| Oconomowoc Lake | 16 | 592 | 572 | 0.68% | 308 | 1.92 | Village |
| Neosho | 17 | 575 | 590 | -0.52% | 1,093 | 0.53 | Village |
| Clyman | 18 | 394 | 398 | -0.25% | 1,051 | 0.38 | Village |
| Burnett | 19 | 301 | 327 | 1.01% | 1,204 | 0.25 | CDP |
| Lowell | 20 | 299 | 309 | -0.66% | 302 | 0.99 | Village |
| Lac La Belle | 21 | 284 | 278 | 0.35% | 257 | 1.11 | Village |
| Rubicon | 22 | 149 | 136 | 7.19% | 352 | 0.42 | CDP |
| Lebanon | 23 | 116 | 98 | -4.92% | 263 | 0.44 | CDP |
Watertown is the largest city in Dodge County, with a population of 22,530.
Lebanon is the smallest city in Dodge County.
There are 23 cities in Dodge County, Wisconsin.