ZIP Code 79003 — Allison, TX
79003 is a standard (street delivery) ZIP code serving Allison, Texas, in Hemphill 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 79003 at a glance
| ZIP code | 79003 |
|---|---|
| Primary city | Allison |
| State | Texas (TX) |
| County | Hemphill FIPS 48211 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 177 |
| Coordinates | 35.638730, -100.088100 |
How ZIP+4 works in 79003
The four digits after the hyphen encode a delivery segment inside 79003. 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 79003 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 79003.
| ZIP | City | Distance |
|---|---|---|
| 79011 | Briscoe, TX | 6.8 mi |
| 73660 | Reydon, OK | 9.6 mi |
| 79096 | Wheeler, TX | 14.3 mi |
| 73642 | Durham, OK | 16 mi |
| 73666 | Sweetwater, OK | 17.7 mi |
| 79061 | Mobeetie, TX | 22.3 mi |
| 73628 | Cheyenne, OK | 22.5 mi |
| 73638 | Crawford, OK | 22.9 mi |
| 79014 | Canadian, TX | 23.3 mi |
| 73668 | Texola, OK | 29.3 mi |
| 79079 | Shamrock, TX | 31.1 mi |
| 73662 | Sayre, OK | 32.7 mi |
Questions about 79003
What is the ZIP+4 code for 79003?
79003 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 79003, you need to look up a specific street address to get them.
What city is 79003?
79003 is assigned to Allison, Texas, in Hemphill 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.