ZIP Code 93427 — Buellton, CA
93427 is a standard (street delivery) ZIP code serving Buellton, 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 93427 at a glance
| ZIP code | 93427 |
|---|---|
| Primary city | Buellton |
| State | California (CA) |
| County | Santa Barbara FIPS 06083 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Los_Angeles |
| Population | 5,737 |
| Coordinates | 34.627240, -120.224650 |
How ZIP+4 works in 93427
The four digits after the hyphen encode a delivery segment inside 93427. 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 93427 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.
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 93427.
| ZIP | City | Distance |
|---|---|---|
| 93463 | Solvang, CA | 5.3 mi |
| 93440 | Los Alamos, CA | 8.4 mi |
| 93436 | Lompoc, CA | 10 mi |
| 93441 | Los Olivos, CA | 10.3 mi |
| 93117 | Goleta, CA | 12.4 mi |
| 93460 | Santa Ynez, CA | 18.5 mi |
| 93437 | Lompoc, CA | 18.7 mi |
| 93455 | Santa Maria, CA | 19.8 mi |
| 93454 | Santa Maria, CA | 22.2 mi |
| 93429 | Casmalia, CA | 24.2 mi |
| 93106 | Santa Barbara, CA | 25.7 mi |
| 93111 | Santa Barbara, CA | 26.9 mi |
Questions about 93427
What is the ZIP+4 code for 93427?
93427 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 93427, you need to look up a specific street address to get them.
What city is 93427?
93427 is assigned to Buellton, 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.