Keymar, MD ZIP code
The ZIP code for Keymar, Maryland is 21757. It is in Carroll County.
- Population in these ZIPs
- 2,671
- Avg. median income
- $100,500population-weighted
- Typical home value
- $454,300population-weighted
- Metro area
- Baltimore-Columbia-Towson, MD
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Keymar, MD ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 21757 | 2,671 | $100,500 | $454,300 |
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 Keymar
- Rocky Ridge 4 mi
- Woodsboro 4 mi
- Union Bridge 6 mi
- Taneytown 7 mi
- Emmitsburg 8 mi
- Libertytown 8 mi
- Thurmont 8 mi
- Walkersville 9 mi
- New Windsor 10 mi
- Sabillasville 13 mi
- New Market 13 mi
- Westminster 13 mi
Frequently asked questions
What is the ZIP code for Keymar, MD?
The ZIP code for Keymar, MD is 21757.
What county is Keymar, Maryland in?
Keymar ZIP codes are in Carroll County.