17 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Owatonna | 1 | 26,611 | 26,418 | 0.15% | 1,755 | 15.17 | City |
| Blooming Prairie | 2 | 1,942 | 1,966 | -0.26% | 1,424 | 1.36 | City |
| Medford | 3 | 1,402 | 1,316 | 1.23% | 1,174 | 1.19 | City |
| Medford township | 4 | 832 | 844 | -0.6% | 50 | 16.60 | Township |
| Somerset township | 5 | 696 | 729 | -1.28% | 19 | 36.02 | Township |
| Ellendale | 6 | 662 | 672 | -0.3% | 794 | 0.83 | City |
| Meriden township | 7 | 591 | 619 | -1.34% | 16 | 36.06 | Township |
| Owatonna township | 8 | 586 | 609 | -1.18% | 25 | 23.22 | Township |
| Havana township | 9 | 535 | 557 | -1.11% | 15 | 34.94 | Township |
| Deerfield township | 10 | 519 | 540 | -1.14% | 15 | 35.51 | Township |
| Berlin township | 11 | 488 | 504 | -0.81% | 14 | 35.06 | Township |
| Lemond township | 12 | 482 | 505 | -1.43% | 13 | 36.05 | Township |
| Summit township | 13 | 418 | 431 | -0.71% | 12 | 36.05 | Township |
| Blooming Prairie township | 14 | 389 | 401 | -0.77% | 11 | 34.34 | Township |
| Clinton Falls township | 15 | 373 | 383 | -0.53% | 24 | 15.24 | Township |
| Merton township | 16 | 342 | 358 | -1.16% | 10 | 35.88 | Township |
| Hope township | 17 | 217 | 220 | -0.46% | 6 | 34.66 | Township |
Owatonna is the largest city in Steele County, with a population of 26,611.
Hope township is the smallest city in Steele County.
There are 17 cities in Steele County, Minnesota.