ZIP Code 93458 — Santa Maria, CA
93458 is a standard (street delivery) ZIP code serving Santa Maria, California, in Santa Barbara 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 93458 at a glance
| ZIP code | 93458 |
|---|---|
| Primary city | Santa Maria |
| State | California (CA) |
| County | Santa Barbara FIPS 06083 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Los_Angeles |
| Population | 59,148 |
| Coordinates | 34.954770, -120.490420 |
How ZIP+4 works in 93458
The four digits after the hyphen encode a delivery segment inside 93458. 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 93458 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 Santa Maria
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 93458.
| ZIP | City | Distance |
|---|---|---|
| 93444 | Nipomo, CA | 5.6 mi |
| 93429 | Casmalia, CA | 6.6 mi |
| 93434 | Guadalupe, CA | 6.9 mi |
| 93455 | Santa Maria, CA | 8 mi |
| 93445 | Oceano, CA | 9.1 mi |
| 93433 | Grover Beach, CA | 13.5 mi |
| 93437 | Lompoc, CA | 13.5 mi |
| 93454 | Santa Maria, CA | 14.5 mi |
| 93420 | Arroyo Grande, CA | 14.7 mi |
| 93449 | Pismo Beach, CA | 16.7 mi |
| 93440 | Los Alamos, CA | 19.7 mi |
| 93401 | San Luis Obispo, CA | 20.7 mi |
Questions about 93458
What is the ZIP+4 code for 93458?
93458 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 93458, you need to look up a specific street address to get them.
What city is 93458?
93458 is assigned to Santa Maria, California, in Santa Barbara 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.