Middle River, MD ZIP Code
Middle River, Maryland has one ZIP code: .
Mail addressed to Middle River covers nearby places too.
Where the 21220 ZIP code reaches
Tap or point to an area to see its ZIP code.Full-size map
Dashed line: the Middle River Census outline.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
Check an address in Middle River
Street ranges from the Census Bureau, 2026. PO box and organization ZIP codes are not found by street. A new street may be missing: address not found?
ZIP codes from nearby towns that reach into Middle River
- 21221, mailing town Essex, covers 8 percent of Middle River
- 21162, mailing town White Marsh, covers 4 percent of Middle River
Why your mail may say Middle River when you live outside it
Middle River ZIP codes also cover Bowleys Quarters, so a letter addressed to Middle River can go to a home outside the town.
The reverse happens too: parts of Middle River use 21221 and 21162, which mail under a neighboring town's name.
A ZIP code does not set your city, school district or tax. Baltimore County property records show which city you are in.
Middle River ZIP code questions
What is the main ZIP code for Middle River?
21220, the ZIP code of the main Middle River post office at 200 Wilson Point Rd.
What county is Middle River in?
Baltimore County.
ZIP codes for towns near Middle River
More towns near Middle River: Pasadena, Pikesville, Bel Air North, Glen Burnie, Woodlawn, Catonsville, Milford Mill, Severna Park, Owings Mills.
Sources and last checked
USPS ZIP Locale Detail (October 1, 2026), GeoNames (CC BY 4.0), U.S. Census Bureau, HUD-USPS crosswalk.
Checked October 20, 2026. Sources · How we build our lists · Corrections