8 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Hastings | 1 | 25,162 | 25,132 | 0.02% | 1,670 | 15 | City |
| Kenesaw | 2 | 927 | 908 | 0.32% | 877 | 1 | Village |
| Juniata | 3 | 744 | 747 | 0% | 1,102 | 1 | Village |
| Roseland | 4 | 259 | 261 | 0% | 938 | 0 | Village |
| Holstein | 5 | 188 | 188 | 0% | 743 | 0 | Village |
| Ayr | 6 | 84 | 87 | 0% | 347 | 0 | Village |
| Prosser | 7 | 79 | 79 | 0% | 322 | 0 | Village |
| Cowles | 8 | 21 | 21 | 0% | 38 | 1 | Village |
Hastings is the largest city in Adams County, with a population of 25,162.
Cowles is the smallest city in Adams County, with a population of 21.
There are 8 cities in Adams County, Nebraska.