8 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Mountain Lake Park | 1 | 2,102 | 2,149 | -0.38% | 1,098 | 2 | Town |
| Oakland | 2 | 1,797 | 1,844 | -0.44% | 663 | 3 | Town |
| Grantsville | 3 | 944 | 964 | -0.32% | 910 | 1 | Town |
| Loch Lynn Heights | 4 | 479 | 490 | -0.42% | 1,506 | 0 | Town |
| Friendsville | 5 | 424 | 433 | -0.24% | 424 | 1 | Town |
| Accident | 6 | 329 | 337 | -0.3% | 666 | 0 | Town |
| Deer Park | 7 | 297 | 305 | -0.34% | 297 | 1 | Town |
| Kitzmiller | 8 | 284 | 296 | -0.7% | 1,279 | 0 | Town |
Mountain Lake Park is the largest city in Garrett County, with a population of 2,102.
Kitzmiller is the smallest city in Garrett County, with a population of 284.
There are 8 cities in Garrett County, Maryland.