ZIP Code 79031 — Earth, TX
79031 is a standard (street delivery) ZIP code serving Earth, Texas, in Lamb 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 79031 at a glance
| ZIP code | 79031 |
|---|---|
| Primary city | Earth |
| State | Texas (TX) |
| County | Lamb FIPS 48279 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 1,156 |
| Coordinates | 34.245010, -102.452250 |
How ZIP+4 works in 79031
The four digits after the hyphen encode a delivery segment inside 79031. 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 79031 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 79031.
| ZIP | City | Distance |
|---|---|---|
| 79082 | Springlake, TX | 9.6 mi |
| 79053 | Lazbuddie, TX | 13.5 mi |
| 79312 | Amherst, TX | 13.5 mi |
| 79326 | Fieldton, TX | 16.9 mi |
| 79027 | Dimmitt, TX | 18.3 mi |
| 79064 | Olton, TX | 19.1 mi |
| 79043 | Hart, TX | 19.9 mi |
| 79347 | Muleshoe, TX | 20 mi |
| 79371 | Sudan, TX | 22.9 mi |
| 79339 | Littlefield, TX | 25.9 mi |
| 79063 | Nazareth, TX | 26.6 mi |
| 79369 | Spade, TX | 26.7 mi |
Questions about 79031
What is the ZIP+4 code for 79031?
79031 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 79031, you need to look up a specific street address to get them.
What city is 79031?
79031 is assigned to Earth, Texas, in Lamb 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.