ZIP Code 75503 — Texarkana, TX
75503 is a standard (street delivery) ZIP code serving Texarkana, Texas, in Bowie 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 75503 at a glance
| ZIP code | 75503 |
|---|---|
| Primary city | Texarkana |
| State | Texas (TX) |
| County | Bowie FIPS 48037 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 26,372 |
| Coordinates | 33.513450, -94.130380 |
How ZIP+4 works in 75503
The four digits after the hyphen encode a delivery segment inside 75503. 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 75503 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 Texarkana
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 75503.
| ZIP | City | Distance |
|---|---|---|
| 75569 | Nash, TX | 5 mi |
| 75561 | Hooks, TX | 8.5 mi |
| 75501 | Texarkana, TX | 9.6 mi |
| 71822 | Ashdown, AR | 10.8 mi |
| 71853 | Ogden, AR | 11.5 mi |
| 75573 | Redwater, TX | 13 mi |
| 71854 | Texarkana, AR | 13.8 mi |
| 71865 | Wilton, AR | 15.8 mi |
| 75567 | Maud, TX | 17.4 mi |
| 75570 | New Boston, TX | 18.1 mi |
| 71859 | Saratoga, AR | 18.3 mi |
| 75572 | Queen City, TX | 19.5 mi |
Questions about 75503
What is the ZIP+4 code for 75503?
75503 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 75503, you need to look up a specific street address to get them.
What city is 75503?
75503 is assigned to Texarkana, Texas, in Bowie 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.