ZIP Code 78001 — Artesia Wells, TX
78001 is a standard (street delivery) ZIP code serving Artesia Wells, Texas, in La Salle 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 78001 at a glance
| ZIP code | 78001 |
|---|---|
| Primary city | Artesia Wells |
| State | Texas (TX) |
| County | La Salle FIPS 48283 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Coordinates | 28.253270, -99.227310 |
How ZIP+4 works in 78001
The four digits after the hyphen encode a delivery segment inside 78001. 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 78001 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 78001.
| ZIP | City | Distance |
|---|---|---|
| 78014 | Cotulla, TX | 12.3 mi |
| 78019 | Encinal, TX | 16.2 mi |
| 78830 | Big Wells, TX | 24.7 mi |
| 78836 | Catarina, TX | 25.9 mi |
| 78021 | Fowlerton, TX | 26.8 mi |
| 78827 | Asherton, TX | 32.5 mi |
| 78017 | Dilley, TX | 32.5 mi |
| 78044 | Laredo, TX | 34.3 mi |
| 78045 | Laredo, TX | 39.2 mi |
| 78839 | Crystal City, TX | 45.1 mi |
Questions about 78001
What is the ZIP+4 code for 78001?
78001 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 78001, you need to look up a specific street address to get them.
What city is 78001?
78001 is assigned to Artesia Wells, Texas, in La Salle 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.