19 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Watertown | 1 | 22,458 | 22,934 | -0.35% | 1,862 | 12 | City |
| Beaver Dam | 2 | 16,307 | 16,714 | -0.42% | 1,852 | 9 | City |
| Waupun | 3 | 10,913 | 11,567 | -0.99% | 2,337 | 5 | City |
| Mayville | 4 | 5,211 | 5,192 | 0.06% | 1,601 | 3 | City |
| Horicon | 5 | 3,955 | 3,783 | 0.74% | 1,129 | 4 | City |
| Juneau | 6 | 2,723 | 2,650 | 0.44% | 1,651 | 2 | City |
| Lomira | 7 | 2,666 | 2,681 | -0.07% | 1,214 | 2 | Village |
| Fox Lake | 8 | 1,721 | 1,604 | 1.18% | 1,046 | 2 | City |
| Theresa | 9 | 1,294 | 1,252 | 0.54% | 1,753 | 1 | Village |
| Hustisford | 10 | 1,063 | 1,096 | -0.47% | 953 | 1 | Village |
| Iron Ridge | 11 | 925 | 904 | 0.43% | 1,379 | 1 | Village |
| Kekoskee | 12 | 875 | 890 | -0.23% | 28 | 32 | Village |
| Reeseville | 13 | 760 | 762 | 0% | 1,216 | 1 | Village |
| Brownsville | 14 | 676 | 598 | 1.96% | 1,103 | 1 | Village |
| Neosho | 15 | 578 | 590 | -0.34% | 1,099 | 1 | Village |
| Oconomowoc Lake | 16 | 568 | 570 | 0% | 296 | 2 | Village |
| Clyman | 17 | 389 | 398 | -0.26% | 1,037 | 0 | Village |
| Lowell | 18 | 299 | 313 | -0.66% | 302 | 1 | Village |
| Lac La Belle | 19 | 280 | 283 | 0% | 253 | 1 | Village |
Watertown is the largest city in Dodge County, with a population of 22,458.
Lac La Belle is the smallest city in Dodge County, with a population of 280.
There are 19 cities in Dodge County, Wisconsin.