15 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Monroe | 1 | 10,566 | 10,665 | -0.12% | 1,888 | 6 | City |
| Monroe | 2 | 10,566 | 10,630 | -0.12% | 1,888 | 6 | City |
| Brodhead | 3 | 3,220 | 3,272 | -0.28% | 1,794 | 2 | City |
| Brodhead | 4 | 3,220 | 3,264 | -0.28% | 1,794 | 2 | City |
| New Glarus | 5 | 2,276 | 2,265 | -0.04% | 1,261 | 2 | Village |
| New Glarus | 6 | 2,276 | 2,279 | -0.04% | 1,261 | 2 | Village |
| Brooklyn | 7 | 1,535 | 1,526 | 0.13% | 1,373 | 1 | Village |
| Brooklyn | 8 | 1,535 | 1,522 | 0.13% | 1,373 | 1 | Village |
| Monticello | 9 | 1,177 | 1,191 | -0.17% | 987 | 1 | Village |
| Monticello | 10 | 1,177 | 1,187 | -0.17% | 987 | 1 | Village |
| Albany | 11 | 1,090 | 1,112 | -0.37% | 858 | 1 | Village |
| Albany | 12 | 1,090 | 1,108 | -0.37% | 858 | 1 | Village |
| Juda | 13 | 377 | 322 | 0.27% | 1,478 | 0 | CDP |
| Browntown | 14 | 241 | 241 | 0% | 229 | 1 | Village |
| Browntown | 15 | 241 | 240 | 0% | 229 | 1 | Village |
Monroe is the largest city in Green County, with a population of 10,566.
Browntown is the smallest city in Green County, with a population of 241.
There are 15 cities in Green County, Wisconsin.