Union Bridge, MD ZIP code
The ZIP code for Union Bridge, Maryland is 21791. It is in Frederick County.
- Population in these ZIPs
- 5,340
- Avg. median income
- $93,000population-weighted
- Typical home value
- $444,900population-weighted
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Union Bridge, MD ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 21791 | 5,340 | $93,015 | $444,900 |
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 Union Bridge
- Libertytown 5 mi
- New Windsor 5 mi
- Keymar 6 mi
- Woodsboro 6 mi
- Walkersville 9 mi
- Rocky Ridge 9 mi
- New Market 10 mi
- Mount Airy 10 mi
- Taneytown 10 mi
- Westminster 11 mi
- Thurmont 13 mi
- Emmitsburg 13 mi
Frequently asked questions
What is the ZIP code for Union Bridge, MD?
The ZIP code for Union Bridge, MD is 21791.
What county is Union Bridge, Maryland in?
Union Bridge ZIP codes are in Frederick County.