21778 vs 21788 ZIP Codes
Rocky Ridge, MD · Thurmont, MD
| Metric | 21778 | 21788 |
|---|---|---|
| City | Rocky Ridge | Thurmont |
| County | Frederick | Frederick |
| State | Maryland | Maryland |
| Time zone | Eastern Time | Eastern Time |
| Population | 1,094 | 11,622 |
Demographic figures come from U.S. Census Bureau / ACS data included in the source ZIP dataset; many ZIP codes have no demographic figures in that dataset.