ZIP Code 71770 — Waldo, AR
71770 is a standard (street delivery) ZIP code serving Waldo, Arkansas, in Columbia 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 71770 at a glance
| ZIP code | 71770 |
|---|---|
| Primary city | Waldo |
| State | Arkansas (AR) |
| County | Columbia FIPS 05027 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 3,307 |
| Coordinates | 33.388470, -93.316070 |
How ZIP+4 works in 71770
The four digits after the hyphen encode a delivery segment inside 71770. 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 71770 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 71770.
| ZIP | City | Distance |
|---|---|---|
| 71827 | Buckner, AR | 5.9 mi |
| 71752 | Mcneil, AR | 7.1 mi |
| 71864 | Willisville, AR | 8.5 mi |
| 71860 | Stamps, AR | 11.6 mi |
| 71753 | Magnolia, AR | 13.3 mi |
| 71858 | Rosston, AR | 13.9 mi |
| 71764 | Stephens, AR | 15.9 mi |
| 71845 | Lewisville, AR | 18.9 mi |
| 71835 | Emmet, AR | 20.6 mi |
| 71861 | Taylor, AR | 22.2 mi |
| 71740 | Emerson, AR | 23 mi |
| 71801 | Hope, AR | 23.4 mi |
Questions about 71770
What is the ZIP+4 code for 71770?
71770 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 71770, you need to look up a specific street address to get them.
What city is 71770?
71770 is assigned to Waldo, Arkansas, in Columbia 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.