ZIP Code 93257 — Porterville, CA
93257 is a standard (street delivery) ZIP code serving Porterville, California, in Tulare County. To mail something here you only need these five digits — but the four-digit extension narrows delivery to a single point, and it is what USPS bulk postage discounts are priced on.
ZIP code 93257 at a glance
| ZIP code | 93257 |
|---|---|
| Primary city | Porterville |
| State | California (CA) |
| County | Tulare FIPS 06107 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Los_Angeles |
| Population | 80,467 |
| Coordinates | 35.987080, -118.894930 |
How ZIP+4 works in 93257
The four digits after the hyphen encode a delivery segment inside 93257. In practice one segment usually means:
- One side of one block — odd numbers on a street between two cross streets
- A single large building, or one floor of it
- A group of PO boxes, sometimes a single box
- A single business that receives enough mail to warrant its own code
That is why 93257 has no single ZIP+4: two neighbors across the street from each other usually have different ones. Enter a street address above and we will return the exact nine-digit code along with the standardized USPS address format.
Other ZIP codes in Porterville
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 93257.
| ZIP | City | Distance |
|---|---|---|
| 93270 | Terra Bella, CA | 9.4 mi |
| 93218 | Ducor, CA | 11.8 mi |
| 93267 | Strathmore, CA | 14.7 mi |
| 93258 | Porterville, CA | 15.2 mi |
| 93207 | California Hot Springs, CA | 16.2 mi |
| 93261 | Richgrove, CA | 17.3 mi |
| 93208 | Camp Nelson, CA | 17.3 mi |
| 93260 | Posey, CA | 17.5 mi |
| 93247 | Lindsay, CA | 18.2 mi |
| 93287 | Woody, CA | 18.2 mi |
| 93265 | Springville, CA | 18.4 mi |
| 93226 | Glennville, CA | 18.8 mi |
Questions about 93257
What is the ZIP+4 code for 93257?
93257 is the five-digit ZIP code. The ZIP+4 adds four more digits that identify a specific delivery point — usually one side of a city block, a single building, or a group of PO boxes. Because those four digits change from address to address within 93257, you need to look up a specific street address to get them.
What city is 93257?
93257 is assigned to Porterville, California, in Tulare County.
Do I need to use the ZIP+4?
It is optional for ordinary mail, but it speeds up sorting and it is required for most USPS bulk-mail postage discounts. Many address-verification and e-commerce systems also use ZIP+4 to confirm a delivery point exists.
Need thousands of these?
Upload a CSV and get ZIP+4, county, carrier route, and delivery-point data appended to every row — or call the API directly.