| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Mountain Lake Park | 1 | 2,093 | 2,147 | -0.38% | 1,093 | 2 | Town |
| Oakland | 2 | 1,797 | 1,843 | -0.61% | 663 | 3 | Town |
| Grantsville | 3 | 951 | 966 | -0.31% | 917 | 1 | Town |
| Loch Lynn Heights | 4 | 480 | 490 | -0.41% | 1,509 | 0 | Town |
| Friendsville | 5 | 424 | 432 | -0.47% | 424 | 1 | Town |
| Accident | 6 | 328 | 335 | -0.61% | 664 | 0 | Town |
| Deer Park | 7 | 300 | 306 | -0.33% | 300 | 1 | Town |
| Kitzmiller | 8 | 290 | 298 | -0.68% | 1,306 | 0 | Town |
Mountain Lake Park is the largest city in Garrett County, with a population of 2,093.
Kitzmiller is the smallest city in Garrett County, with a population of 290.
There are 8 cities in Garrett County, Maryland.