| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Westminster | 1 | 20,709 | 20,147 | 0.58% | 3,063 | 7 | City |
| Taneytown | 2 | 8,510 | 7,271 | 3.04% | 2,533 | 3 | City |
| Hampstead | 3 | 6,290 | 6,235 | 0.14% | 1,881 | 3 | Town |
| Manchester | 4 | 5,432 | 5,404 | 0.11% | 2,275 | 2 | Town |
| Sykesville | 5 | 4,673 | 4,326 | 1.54% | 2,924 | 2 | Town |
| New Windsor | 6 | 1,824 | 1,451 | 4.29% | 2,472 | 1 | Town |
| Union Bridge | 7 | 942 | 938 | 0.11% | 830 | 1 | Town |
Westminster is the largest city in Carroll County, with a population of 20,709.
Union Bridge is the smallest city in Carroll County, with a population of 942.
There are 7 cities in Carroll County, Maryland.