Dundalk, MD ZIP Codes
Dundalk, Maryland has 2 ZIP codes: 2 for street addresses ( and ).
Your street decides which one you use.
Which Dundalk ZIP code is my address in?
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?
Dundalk ZIP code map
Tap or point to an area to see its ZIP code.Full-size map
Dashed line: the Dundalk Census outline.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
All Dundalk ZIP codes by type
| ZIP | Type and post office or station |
|---|---|
| 21222 | street delivery Dundalk Sparrows Point |
| 21224 | street delivery; mail may be addressed to Baltimore Highlandtown |
ZIP codes from nearby towns that reach into Dundalk
- 21219, mailing town Sparrows Point, covers 2 percent of Dundalk
Why your mail may say Dundalk when you live outside it
A letter addressed to Dundalk can go to a home outside the town, because ZIP areas follow delivery routes, not town lines.
The reverse happens too: parts of Dundalk use 21219, which mails 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.
Dundalk ZIP code questions
What is the main ZIP code for Dundalk?
21222, the ZIP code of the main Dundalk Sparrows Point post office at 44 Shipping Pl.
What county is Dundalk in?
Baltimore County.
ZIP codes for towns near Dundalk
More towns near Dundalk: Towson, Severna Park, Catonsville, Woodlawn, Pikesville, Severn, Milford Mill, Odenton, Randallstown.
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