Towson, MD ZIP Codes
Towson, Maryland has 6 ZIP codes: 3 for street addresses (, and ), 2 for PO boxes ( and ) and 1 for a single organization.
Your street decides which one you use.
Which Towson 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?
Towson ZIP code map
Tap or point to an area to see its ZIP code.Full-size map
21252, 21284 and 21285 have no area on the map: they are PO box or single-organization ZIP codes. Dashed line: the Towson Census outline.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
All Towson ZIP codes by type
| ZIP | Type and post office or station |
|---|---|
| 21204 | street delivery Loch Raven |
| 21212 | street delivery; mail may be addressed to Baltimore Govans |
| 21252 | one organization Loch Raven |
| 21284 | PO boxes at the Loch Raven post office Loch Raven |
| 21285 | PO boxes at the Towson post office Towson |
| 21286 | street delivery Loch Raven |
ZIP codes from nearby towns that reach into Towson
Why your mail may say Towson when you live outside it
Towson ZIP codes also cover Hampton, so a letter addressed to Towson can go to a home outside the town.
The reverse happens too: parts of Towson use 21209, 21239 and 21210, 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.
Towson ZIP code questions
What is the main ZIP code for Towson?
21204, the ZIP code of the main Loch Raven post office at 808 Gleneagles Ct Suite 1.
Which Towson ZIP codes are for PO boxes only?
21284 and 21285. Mail to them goes to boxes at the post office, not to street addresses.
What county is Towson in?
Baltimore County.
ZIP codes for towns near Towson
More towns near Towson: Randallstown, Middle River, Dundalk, Catonsville, Essex, Ellicott City, Glen Burnie, Pasadena, Bel Air North.
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