6 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Mount Ida | 1 | 1,019 | 1,022 | -0.1% | 649 | 2 | City |
| Norman | 2 | 304 | 306 | -0.33% | 270 | 1 | Town |
| Oden | 3 | 184 | 179 | 0.55% | 226 | 1 | Town |
| Black Springs | 4 | 93 | 91 | 0% | 209 | 0 | Town |
| Caddo Gap | 5 | 79 | 101 | 6.76% | 198 | 0 | CDP |
| Pencil Bluff | 6 | 49 | 157 | 6.52% | 93 | 1 | CDP |
Mount Ida is the largest city in Montgomery County, with a population of 1,019.
Pencil Bluff is the smallest city in Montgomery County, with a population of 49.
There are 6 cities in Montgomery County, Arkansas.