9 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 21784 | Sykesville | 39,258 |
| 21157 | Westminster | 38,984 |
| 21158 | Westminster | 22,083 |
| 21074 | Hampstead | 14,777 |
| 21102 | Manchester | 12,162 |
| 21787 | Taneytown | 11,645 |
| 21048 | Finksburg | 10,481 |
| 21776 | New Windsor | 6,261 |
| 21757 | Keymar | 2,671 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 9 ZCTAs in Carroll County, Maryland (US Census).