ZIP Code 79103 — Amarillo, TX
79103 is a standard (street delivery) ZIP code serving Amarillo, Texas, in Potter 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 79103 at a glance
| ZIP code | 79103 |
|---|---|
| Primary city | Amarillo |
| State | Texas (TX) |
| County | Potter FIPS 48375 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 11,306 |
| Coordinates | 35.182970, -101.799900 |
How ZIP+4 works in 79103
The four digits after the hyphen encode a delivery segment inside 79103. 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 79103 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 Amarillo
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 79103.
| ZIP | City | Distance |
|---|---|---|
| 79104 | Amarillo, TX | 1.4 mi |
| 79101 | Amarillo, TX | 2.7 mi |
| 79102 | Amarillo, TX | 2.9 mi |
| 79107 | Amarillo, TX | 3.3 mi |
| 79110 | Amarillo, TX | 4.6 mi |
| 79109 | Amarillo, TX | 5 mi |
| 79106 | Amarillo, TX | 5.4 mi |
| 79118 | Amarillo, TX | 6.4 mi |
| 79111 | Amarillo, TX | 6.7 mi |
| 79121 | Amarillo, TX | 7.3 mi |
| 79108 | Amarillo, TX | 13.3 mi |
| 79119 | Amarillo, TX | 13.4 mi |
Questions about 79103
What is the ZIP+4 code for 79103?
79103 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 79103, you need to look up a specific street address to get them.
What city is 79103?
79103 is assigned to Amarillo, Texas, in Potter 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.