| City | County | 2026 Pop. ↓ |
|---|---|---|
| Kenosha | Kenosha County | 99,102 |
| Kaukauna | Outagamie County | 18,814 |
| Kronenwetter | Marathon County | 8,430 |
| Kimberly | Outagamie County | 7,598 |
| Kewaskum | Washington County | 4,623 |
| Kiel | Manitowoc County | 3,986 |
| Kewaunee | Kewaunee County | 2,790 |
| Kohler | Sheboygan County | 2,292 |
| Keshena | Menominee County | 1,539 |
| King | Waupaca County | 1,410 |
| Kekoskee | Dodge County | 910 |
| Knapp | Dunn County | 486 |
| Kendall | Monroe County | 463 |
| Krakow | Shawano County | 324 |
| Kellnersville | Manitowoc County | 310 |
| Kieler | Grant County | 296 |
| Kingston | Green Lake County | 289 |
| Kennan | Price County | 143 |
| Knowlton | Marathon County | 60 |