ZIP Code 71766 — Thornton, AR
71766 is a standard (street delivery) ZIP code serving Thornton, Arkansas, in Calhoun 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 71766 at a glance
| ZIP code | 71766 |
|---|---|
| Primary city | Thornton |
| State | Arkansas (AR) |
| County | Calhoun FIPS 05013 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 690 |
| Coordinates | 33.736200, -92.502050 |
How ZIP+4 works in 71766
The four digits after the hyphen encode a delivery segment inside 71766. 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 71766 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 71766.
| ZIP | City | Distance |
|---|---|---|
| 71742 | Fordyce, AR | 7.5 mi |
| 71720 | Bearden, AR | 8.8 mi |
| 71748 | Ivan, AR | 12.2 mi |
| 71652 | Kingsland, AR | 15.2 mi |
| 71744 | Hampton, AR | 16.9 mi |
| 71631 | Banks, AR | 17.3 mi |
| 71745 | Harrell, AR | 17.4 mi |
| 71660 | New Edinburg, AR | 17.6 mi |
| 71725 | Carthage, AR | 20.9 mi |
| 71701 | Camden, AR | 20.9 mi |
| 71763 | Sparkman, AR | 21.1 mi |
| 71671 | Warren, AR | 24.7 mi |
Questions about 71766
What is the ZIP+4 code for 71766?
71766 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 71766, you need to look up a specific street address to get them.
What city is 71766?
71766 is assigned to Thornton, Arkansas, in Calhoun 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.