8 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Berlin | 1 | 5,636 | 5,573 | 0.23% | 952 | 5.92 | City |
| Markesan | 2 | 1,372 | 1,379 | -0.07% | 590 | 2.32 | City |
| Princeton | 3 | 1,261 | 1,263 | 0% | 814 | 1.55 | City |
| Green Lake | 4 | 1,036 | 1,006 | 0.58% | 556 | 1.86 | City |
| Kingston | 5 | 284 | 283 | 0% | 218 | 1.30 | Village |
| Dalton | 6 | 227 | 203 | 0.44% | 506 | 0.45 | CDP |
| Marquette | 7 | 172 | 172 | 0% | 457 | 0.38 | Village |
| Harrisville | 8 | 166 | 170 | 7.1% | 221 | 0.75 | CDP |
Berlin is the largest city in Green Lake County, with a population of 5,636.
Harrisville is the smallest city in Green Lake County.
There are 8 cities in Green Lake County, Wisconsin.