ZIP Code 79556 — Sweetwater, TX
79556 is a standard (street delivery) ZIP code serving Sweetwater, Texas, in Nolan 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 79556 at a glance
| ZIP code | 79556 |
|---|---|
| Primary city | Sweetwater |
| State | Texas (TX) |
| County | Nolan FIPS 48353 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 12,532 |
| Coordinates | 32.484510, -100.392630 |
How ZIP+4 works in 79556
The four digits after the hyphen encode a delivery segment inside 79556. 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 79556 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 79556.
| ZIP | City | Distance |
|---|---|---|
| 79545 | Roscoe, TX | 11.7 mi |
| 79561 | Trent, TX | 12.4 mi |
| 79543 | Roby, TX | 16.2 mi |
| 79560 | Sylvester, TX | 16.9 mi |
| 79537 | Nolan, TX | 17.5 mi |
| 79535 | Maryneal, TX | 18.9 mi |
| 79532 | Loraine, TX | 19.4 mi |
| 79536 | Merkel, TX | 21.2 mi |
| 79534 | Mccaulley, TX | 21.2 mi |
| 79526 | Hermleigh, TX | 23.6 mi |
| 79506 | Blackwell, TX | 25.9 mi |
| 79546 | Rotan, TX | 27.8 mi |
Questions about 79556
What is the ZIP+4 code for 79556?
79556 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 79556, you need to look up a specific street address to get them.
What city is 79556?
79556 is assigned to Sweetwater, Texas, in Nolan 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.