13 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Warsaw | 1 | 16,262 | 15,808 | 0.47% | 1,201 | 14 | City |
| Winona Lake | 2 | 5,131 | 5,059 | 0.23% | 1,739 | 3 | Town |
| Syracuse | 3 | 3,234 | 3,240 | -0.03% | 1,461 | 2 | Town |
| Milford | 4 | 1,684 | 1,683 | 0% | 1,160 | 1 | Town |
| North Webster | 5 | 999 | 998 | 0% | 1,235 | 1 | Town |
| Pierceton | 6 | 930 | 932 | 0% | 745 | 1 | Town |
| Mentone | 7 | 914 | 947 | -0.54% | 1,568 | 1 | Town |
| Silver Lake | 8 | 874 | 870 | 0.11% | 1,613 | 1 | Town |
| Etna Green | 9 | 582 | 570 | 0.34% | 1,162 | 1 | Town |
| Leesburg | 10 | 549 | 551 | 0% | 2,145 | 0 | Town |
| Claypool | 11 | 394 | 397 | 0% | 1,615 | 0 | Town |
| Sidney | 12 | 127 | 133 | -0.78% | 1,008 | 0 | Town |
| Burket | 13 | 126 | 123 | 0.8% | 1,775 | 0 | Town |
Warsaw is the largest city in Kosciusko County, with a population of 16,262.
Burket is the smallest city in Kosciusko County, with a population of 126.
There are 13 cities in Kosciusko County, Indiana.