9 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 21157 | Westminster | 39,816 |
| 21784 | Sykesville | 37,219 |
| 21158 | Westminster | 23,011 |
| 21074 | Hampstead | 15,146 |
| 21102 | Manchester | 12,024 |
| 21787 | Taneytown | 10,879 |
| 21048 | Finksburg | 9,759 |
| 21776 | New Windsor | 6,434 |
| 21757 | Keymar | 2,722 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 9 ZCTAs in Carroll County, Maryland (US Census).