Rocky Ridge, MD ZIP code
The ZIP code for Rocky Ridge, Maryland is 21778. It is in Frederick County.
- Population in these ZIPs
- 745
- Avg. median income
- $76,500population-weighted
- Typical home value
- $440,100population-weighted
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Rocky Ridge, MD ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 21778 | 745 | $76,458 | $440,100 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near Rocky Ridge
- Keymar 4 mi
- Thurmont 5 mi
- Emmitsburg 5 mi
- Woodsboro 6 mi
- Sabillasville 9 mi
- Walkersville 9 mi
- Taneytown 9 mi
- Union Bridge 9 mi
- Libertytown 10 mi
- Cascade 11 mi
- Smithsburg 12 mi
- Myersville 13 mi
Frequently asked questions
What is the ZIP code for Rocky Ridge, MD?
The ZIP code for Rocky Ridge, MD is 21778.
What county is Rocky Ridge, Maryland in?
Rocky Ridge ZIP codes are in Frederick County.