| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Council | 1 | 1,009 | 878 | 2.44% | 956 | 1 | City |
| New Meadows | 2 | 718 | 519 | 4.97% | 1,229 | 1 | City |
Council is the largest city in Adams County, with a population of 1,009.
New Meadows is the smallest city in Adams County, with a population of 718.
There are 2 cities in Adams County, Idaho.