2 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Center | 1 | 577 | 586 | -0.35% | 1,207 | 0.48 | City |
| Center township | 2 | 424 | 435 | -0.47% | 10 | 44.34 | Township |
Center is the largest city in Oliver County, with a population of 577.
Center township is the smallest city in Oliver County.
There are 2 cities in Oliver County, North Dakota.