22 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Milwaukee | 1 | 550,837 | 577,207 | -0.95% | 5,728 | 96.17 | City |
| Racine | 2 | 75,875 | 77,692 | -0.48% | 4,904 | 15.47 | City |
| West Allis | 3 | 57,952 | 60,257 | -0.79% | 5,092 | 11.38 | City |
| Wauwatosa | 4 | 46,177 | 48,329 | -0.92% | 3,491 | 13.23 | City |
| Oak Creek | 5 | 37,593 | 36,500 | 0.59% | 1,322 | 28.45 | City |
| Greenfield | 6 | 36,360 | 37,749 | -0.76% | 3,153 | 11.53 | City |
| Franklin | 7 | 35,045 | 36,144 | -0.62% | 1,014 | 34.58 | City |
| Mount Pleasant | 8 | 27,735 | 27,714 | 0.01% | 819 | 33.88 | Village |
| South Milwaukee | 9 | 19,835 | 20,775 | -0.94% | 4,110 | 4.83 | City |
| Cudahy | 10 | 17,390 | 18,180 | -0.9% | 3,643 | 4.77 | City |
| Whitefish Bay | 11 | 14,299 | 14,934 | -0.88% | 6,761 | 2.12 | Village |
| Greendale | 12 | 14,229 | 14,836 | -0.84% | 2,557 | 5.57 | Village |
| Shorewood | 13 | 13,449 | 13,834 | -0.57% | 8,458 | 1.59 | Village |
| Glendale | 14 | 12,636 | 13,343 | -1.1% | 2,192 | 5.76 | City |
| Brown Deer | 15 | 12,527 | 12,592 | -0.1% | 2,850 | 4.39 | Village |
| St. Francis | 16 | 9,523 | 9,157 | 0.77% | 3,723 | 2.56 | City |
| Hales Corners | 17 | 7,394 | 7,714 | -0.86% | 2,316 | 3.19 | Village |
| Fox Point | 18 | 6,400 | 6,920 | -1.6% | 2,238 | 2.86 | Village |
| Bayside | 19 | 4,299 | 4,474 | -0.81% | 1,802 | 2.39 | Village |
| West Milwaukee | 20 | 3,922 | 4,109 | -0.93% | 3,505 | 1.12 | Village |
| Yorkville | 21 | 3,244 | 3,243 | 0% | 97 | 33.50 | Village |
| River Hills | 22 | 1,539 | 1,598 | -0.77% | 298 | 5.16 | Village |
Milwaukee is the largest city in Milwaukee County, with a population of 550,837.
River Hills is the smallest city in Milwaukee County.
There are 22 cities in Milwaukee County, Wisconsin.