Knoxville, MD ZIP code
The ZIP code for Knoxville, Maryland is 21758. It is in Frederick County.
- Population in these ZIPs
- 4,409
- Avg. median income
- $111,500population-weighted
- Typical home value
- $461,300population-weighted
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Knoxville, MD ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 21758 | 4,409 | $111,528 | $461,300 |
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 Knoxville
- Brownsville 2 mi
- Brunswick 3 mi
- Burkittsville 3 mi
- Jefferson 5 mi
- Rohrersville 5 mi
- Keedysville 8 mi
- Middletown 8 mi
- Point Of Rocks 9 mi
- Braddock Heights 9 mi
- Sharpsburg 9 mi
- Tuscarora 10 mi
- Boonsboro 12 mi
Frequently asked questions
What is the ZIP code for Knoxville, MD?
The ZIP code for Knoxville, MD is 21758.
What county is Knoxville, Maryland in?
Knoxville ZIP codes are in Frederick County.