ZIP Code 79830 — Alpine, TX
79830 is a standard (street delivery) ZIP code serving Alpine, Texas, in Brewster 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 79830 at a glance
| ZIP code | 79830 |
|---|---|
| Primary city | Alpine |
| State | Texas (TX) |
| County | Brewster FIPS 48043 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 7,853 |
| Coordinates | 29.894910, -103.499250 |
How ZIP+4 works in 79830
The four digits after the hyphen encode a delivery segment inside 79830. 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 79830 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 Alpine
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 79830.
| ZIP | City | Distance |
|---|---|---|
| 79842 | Marathon, TX | 29.7 mi |
| 79832 | Alpine, TX | 33.5 mi |
| 79846 | Redford, TX | 44 mi |
Questions about 79830
What is the ZIP+4 code for 79830?
79830 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 79830, you need to look up a specific street address to get them.
What city is 79830?
79830 is assigned to Alpine, Texas, in Brewster 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.