7 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Monroe | 1 | 10,553 | 10,630 | -0.12% | 1,754 | 6 | City |
| Brodhead | 2 | 3,211 | 3,264 | -0.28% | 1,789 | 2 | City |
| New Glarus | 3 | 2,276 | 2,279 | 0% | 1,261 | 2 | Village |
| Brooklyn | 4 | 1,538 | 1,522 | 0.2% | 1,376 | 1 | Village |
| Monticello | 5 | 1,175 | 1,187 | -0.17% | 986 | 1 | Village |
| Albany | 6 | 1,087 | 1,108 | -0.28% | 856 | 1 | Village |
| Browntown | 7 | 241 | 240 | 0% | 229 | 1 | Village |
Monroe is the largest city in Green County, with a population of 10,553.
Browntown is the smallest city in Green County, with a population of 241.
There are 7 cities in Green County, Wisconsin.