8 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Eldersburg | 1 | 30,314 | 30,550 | -0.05% | 761 | 39.81 | CDP |
| Westminster | 2 | 20,802 | 20,137 | 0.64% | 3,130 | 6.65 | City |
| Taneytown | 3 | 7,508 | 7,237 | 0.72% | 2,235 | 3.36 | City |
| Hampstead | 4 | 6,493 | 6,248 | 0.76% | 1,942 | 3.34 | Town |
| Manchester | 5 | 5,605 | 5,409 | 0.7% | 2,347 | 2.39 | Town |
| Sykesville | 6 | 4,476 | 4,316 | 0.72% | 2,801 | 1.60 | Town |
| New Windsor | 7 | 1,490 | 1,440 | 0.68% | 2,019 | 0.74 | Town |
| Union Bridge | 8 | 961 | 940 | 0.42% | 847 | 1.14 | Town |
Eldersburg is the largest city in Carroll County, with a population of 30,314.
Union Bridge is the smallest city in Carroll County.
There are 8 cities in Carroll County, Maryland.