ZIP code · Middle River · Maryland · United States
ZIP code 21220 — Middle River
ZIP code 21220 serves Middle River, Maryland.
- Postal code
- 21220Single source Value from one source, not cross-checked.
- City
- Middle River
- County
- Baltimore
- State
- Maryland
- Country
- United States
- Coordinates
- 39.3401, -76.4153 — precision precise (locality)
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Nearby localities
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames. Data generated on 2026-08-21. Methodology · Report an error on this page