19 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Pleasant | 1 | 14,567 | 14,468 | -0.12% | 454 | 32 | Township |
| Angola | 2 | 9,465 | 9,366 | 0.18% | 1,435 | 7 | City |
| Hamilton | 3 | 7,385 | 7,164 | 0.57% | 249 | 30 | Township |
| Hamilton | 4 | 7,061 | 7,134 | -0.17% | 118 | 60 | Township |
| Steuben | 5 | 2,942 | 2,895 | 0.03% | 87 | 34 | Township |
| Fremont | 6 | 2,914 | 2,882 | -0.07% | 127 | 23 | Township |
| Otsego | 7 | 2,512 | 2,475 | 0% | 75 | 33 | Township |
| Fremont | 8 | 2,080 | 2,034 | 0.39% | 669 | 3 | Town |
| Hudson | 9 | 1,837 | 1,849 | -0.05% | 144 | 13 | Township |
| Jackson | 10 | 1,728 | 1,690 | 0.12% | 51 | 34 | Township |
| Hamilton | 11 | 1,644 | 1,570 | 1.42% | 26 | 63 | Township |
| Millgrove | 12 | 1,597 | 1,584 | -0.06% | 72 | 22 | Township |
| Hamilton | 13 | 1,569 | 1,527 | 0.45% | 747 | 2 | Town |
| Scott | 14 | 1,194 | 1,185 | -0.08% | 42 | 29 | Township |
| Clear Lake | 15 | 827 | 809 | 0.12% | 87 | 10 | Township |
| York | 16 | 699 | 691 | 0% | 31 | 22 | Township |
| Hudson | 17 | 597 | 581 | 0.51% | 858 | 1 | Town |
| Orland | 18 | 394 | 388 | 0.25% | 574 | 1 | Town |
| Clear Lake | 19 | 359 | 355 | 0.28% | 323 | 1 | Town |
Pleasant is the largest city in Steuben County, with a population of 14,567.
Clear Lake is the smallest city in Steuben County, with a population of 359.
There are 19 cities in Steuben County, Indiana.