12 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Mount Vernon | 1 | 1,804 | 1,978 | -1.85% | 430 | 4 | City |
| Mount Vernon | 2 | 1,804 | 1,971 | -1.85% | 430 | 4 | City |
| Ailey | 3 | 529 | 519 | 0.38% | 245 | 2 | City |
| Ailey | 4 | 529 | 517 | 0.38% | 245 | 2 | City |
| Uvalda | 5 | 433 | 434 | 0% | 229 | 2 | City |
| Uvalda | 6 | 433 | 432 | 0% | 229 | 2 | City |
| Higgston | 7 | 308 | 313 | -0.32% | 98 | 3 | Town |
| Higgston | 8 | 308 | 311 | -0.32% | 98 | 3 | Town |
| Alston | 9 | 175 | 175 | 0% | 61 | 3 | Town |
| Alston | 10 | 175 | 174 | 0% | 61 | 3 | Town |
| Tarrytown | 11 | 63 | 63 | 0% | 74 | 1 | Town |
| Tarrytown | 12 | 63 | 63 | 0% | 74 | 1 | Town |
Mount Vernon is the largest city in Montgomery County, with a population of 1,804.
Tarrytown is the smallest city in Montgomery County, with a population of 63.
There are 12 cities in Montgomery County, Georgia.