Porterville, CA ZIP Codes
Porterville, California has 2 ZIP codes: for street addresses and for PO boxes.
Mail addressed to Porterville covers nearby places too.
Where the 93257 ZIP code reaches
Tap or point to an area to see its ZIP code.Full-size map
93258 has no area on the map: it is a PO box or single-organization ZIP code. Dashed line: Porterville city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
Check an address in Porterville
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?
Porterville PO box and business ZIP codes
| ZIP | Type and post office or station |
|---|---|
| 93257 | street delivery Porterville |
| 93258 | PO boxes at the Poplar post office Poplar |
Why your mail may say Porterville when you live outside it
Porterville ZIP codes also cover Poplar-Cotton Center, East Porterville and Woodville, so a letter addressed to Porterville can go to a home outside the city limits.
A ZIP code does not set your city, school district or tax. Tulare County property records show which city you are in.
Porterville ZIP code questions
What is the main ZIP code for Porterville?
93257, the ZIP code of the main Porterville post office at 65 W Mill Ave.
Which Porterville ZIP codes are for PO boxes only?
93258. Mail to it goes to boxes at the post office, not to street addresses.
What county is Porterville in?
Tulare County.
ZIP codes for towns near Porterville
More towns near Porterville: Clovis, Fresno, Madera, Paso Robles, Lancaster, San Luis Obispo, Santa Maria, Orcutt, Palmdale.
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