22 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Milwaukee | 1 | 560,124 | 577,157 | -0.6% | 5,824 | 96 | City |
| Racine | 2 | 78,030 | 78,163 | -0.03% | 5,043 | 15 | City |
| West Allis | 3 | 59,665 | 60,259 | -0.2% | 5,243 | 11 | City |
| Wauwatosa | 4 | 48,909 | 48,333 | 0.24% | 3,698 | 13 | City |
| Oak Creek | 5 | 38,797 | 36,674 | 1.1% | 1,364 | 28 | City |
| Greenfield | 6 | 37,105 | 37,738 | -0.34% | 3,218 | 12 | City |
| Franklin | 7 | 36,700 | 36,152 | 0.3% | 1,061 | 35 | City |
| Mount Pleasant | 8 | 28,291 | 27,755 | 0.38% | 835 | 34 | Village |
| South Milwaukee | 9 | 20,098 | 20,772 | -0.67% | 4,165 | 5 | City |
| Cudahy | 10 | 17,584 | 18,181 | -0.68% | 3,683 | 5 | City |
| Glendale | 11 | 14,627 | 13,397 | 1.71% | 2,538 | 6 | City |
| Whitefish Bay | 12 | 14,432 | 14,931 | -0.69% | 6,824 | 2 | Village |
| Greendale | 13 | 14,361 | 14,830 | -0.65% | 2,581 | 6 | Village |
| Shorewood | 14 | 13,443 | 13,833 | -0.58% | 8,455 | 2 | Village |
| Brown Deer | 15 | 12,530 | 12,513 | 0.02% | 2,851 | 4 | Village |
| St. Francis | 16 | 8,901 | 9,148 | -0.56% | 3,480 | 3 | City |
| Hales Corners | 17 | 7,779 | 7,713 | 0.17% | 2,437 | 3 | Village |
| Fox Point | 18 | 6,508 | 6,921 | -1.26% | 2,276 | 3 | Village |
| Bayside | 19 | 4,308 | 4,455 | -0.69% | 1,806 | 2 | Village |
| West Milwaukee | 20 | 3,968 | 4,110 | -0.73% | 3,546 | 1 | Village |
| Yorkville | 21 | 3,247 | 3,246 | 0% | 97 | 33 | Village |
| River Hills | 22 | 1,527 | 1,594 | -0.91% | 296 | 5 | Village |
Milwaukee is the largest city in Milwaukee County, with a population of 560,124.
River Hills is the smallest city in Milwaukee County, with a population of 1,527.
There are 22 cities in Milwaukee County, Wisconsin.