Harlingen, TX ZIP Codes
Harlingen, Texas has 4 ZIP codes: 2 for street addresses ( and ) and 2 for PO boxes ( and ).
Your street decides which one you use.
Which Harlingen 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?
Harlingen ZIP code map
Tap or point to an area to see its ZIP code.Full-size map
78551 and 78553 have no area on the map: they are PO box or single-organization ZIP codes. Dashed line: Harlingen city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
All Harlingen ZIP codes by type
| ZIP | Type and post office or station |
|---|---|
| 78550 | street delivery Harlingen |
| 78551 | PO boxes at the Downtown Harlingen post office Downtown Harlingen |
| 78552 | street delivery Harlingen |
| 78553 | PO boxes at the Harlingen post office Harlingen |
ZIP codes from nearby towns that reach into Harlingen
- 78586, mailing town San Benito, covers 4 percent of Harlingen
Why your mail may say Harlingen when you live outside it
Harlingen ZIP codes also cover Combes, Primera and Lasana, so a letter addressed to Harlingen can go to a home outside the city limits.
The reverse happens too: parts of Harlingen use 78586, which mails 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.
Harlingen ZIP code questions
What is the main ZIP code for Harlingen?
78550, the ZIP code of the main Harlingen post office at 1502 New Combes Hwy.
Which Harlingen ZIP codes are for PO boxes only?
78551 and 78553. Mail to them goes to boxes at the post office, not to street addresses.
What county is Harlingen in?
Cameron County.
ZIP codes for towns near Harlingen
More towns near Harlingen: Mission, Corpus Christi, Laredo, Victoria, San Antonio, Cibolo, Seguin, 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