Brownsville, TX ZIP Codes
Brownsville, Texas has 7 ZIP codes: 5 for street addresses (, , , and ) and 2 for PO boxes ( and ).
Your street decides which one you use.
Which Brownsville 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?
Brownsville ZIP code map
Tap or point to an area to see its ZIP code.Full-size map
78522 and 78523 have no area on the map: they are PO box or single-organization ZIP codes. Dashed line: Brownsville city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
All Brownsville ZIP codes by type
| ZIP | Type and post office or station |
|---|---|
| 78520 | street delivery Brownsville |
| 78521 | street delivery Brownsville |
| 78522 | PO boxes at the Downtown Brownsville post office Downtown Brownsville |
| 78523 | PO boxes at the Brownsville post office Brownsville |
| 78526 | street delivery Brownsville |
| 78566 | street delivery; mail may be addressed to Los Fresnos Los Fresnos |
| 78578 | street delivery; mail may be addressed to Port Isabel Port Isabel |
ZIP codes from nearby towns that reach into Brownsville
- 78586, mailing town San Benito, covers 7 percent of Brownsville
- 78575, mailing town Olmito, covers 2 percent of Brownsville
Why your mail may say Brownsville when you live outside it
Brownsville ZIP codes also cover Port Isabel, Laguna Vista and Laureles, so a letter addressed to Brownsville can go to a home outside the city limits.
The reverse happens too: parts of Brownsville use 78586 and 78575, which mail under a neighboring town's name.
A ZIP code does not set your city, school district or tax. Cameron County property records show which city you are in.
Brownsville ZIP code questions
What is the main ZIP code for Brownsville?
78520, the ZIP code of the main Brownsville post office at 1535 E Los Ebanos Blvd.
Which Brownsville ZIP codes are for PO boxes only?
78522 and 78523. Mail to them goes to boxes at the post office, not to street addresses.
What county is Brownsville in?
Cameron County.
ZIP codes for towns near Brownsville
More towns near Brownsville: Mission, Corpus Christi, Laredo, Victoria, San Antonio, Seguin, Cibolo, Schertz, New Braunfels.
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