4 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Minneapolis | 1 | 1,939 | 1,939 | 0% | 1,058 | 2 | City |
| Bennington | 2 | 664 | 619 | 1.22% | 1,581 | 0 | City |
| Delphos | 3 | 301 | 300 | 0% | 508 | 1 | City |
| Tescott | 4 | 266 | 266 | 0% | 689 | 0 | City |
Minneapolis is the largest city in Ottawa County, with a population of 1,939.
Tescott is the smallest city in Ottawa County, with a population of 266.
There are 4 cities in Ottawa County, Kansas.