ZIP Code 79503 — Avoca, TX
79503 is a standard (street delivery) ZIP code serving Avoca, Texas, in Jones 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 79503 at a glance
| ZIP code | 79503 |
|---|---|
| Primary city | Avoca |
| State | Texas (TX) |
| County | Jones FIPS 48253 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 202 |
| Coordinates | 32.890030, -99.690330 |
How ZIP+4 works in 79503
The four digits after the hyphen encode a delivery segment inside 79503. 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 79503 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 79503.
| ZIP | City | Distance |
|---|---|---|
| 79533 | Lueders, TX | 8.8 mi |
| 79553 | Stamford, TX | 9.3 mi |
| 79501 | Anson, TX | 15.5 mi |
| 79521 | Haskell, TX | 16.5 mi |
| 79548 | Rule, TX | 18.6 mi |
| 79525 | Hawley, TX | 19.8 mi |
| 79601 | Abilene, TX | 22.1 mi |
| 79547 | Rule, TX | 25.2 mi |
| 79520 | Hamlin, TX | 25.5 mi |
| 76430 | Albany, TX | 27 mi |
| 79540 | Old Glory, TX | 28.1 mi |
| 79699 | Abilene, TX | 29.6 mi |
Questions about 79503
What is the ZIP+4 code for 79503?
79503 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 79503, you need to look up a specific street address to get them.
What city is 79503?
79503 is assigned to Avoca, Texas, in Jones 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.