Rocky Ridge, MD zip code
Rocky Ridge, Maryland uses one zip code: 21778. Most of it is in Frederick County. Together these zip codes are home to about 745 people.
Zip codes
1
Population
745
All zips combined
Largest zip
21778
745 residents
Zip codes in Rocky Ridge
| Zip | Type | Population | IncomeMedian income |
|---|---|---|---|
| 21778 | 745 | $76,458 |