ZIP Code 72440 — Lynn, AR
72440 is a standard (street delivery) ZIP code serving Lynn, Arkansas, in Lawrence 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 72440 at a glance
| ZIP code | 72440 |
|---|---|
| Primary city | Lynn |
| State | Arkansas (AR) |
| County | Lawrence FIPS 05075 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 269 |
| Coordinates | 35.992400, -91.264660 |
How ZIP+4 works in 72440
The four digits after the hyphen encode a delivery segment inside 72440. 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 72440 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 72440.
| ZIP | City | Distance |
|---|---|---|
| 72469 | Strawberry, AR | 3.3 mi |
| 72466 | Smithville, AR | 5.2 mi |
| 72572 | Saffell, AR | 6.7 mi |
| 72458 | Powhatan, AR | 8 mi |
| 72410 | Alicia, AR | 10.2 mi |
| 72415 | Black Rock, AR | 10.5 mi |
| 72524 | Cord, AR | 11 mi |
| 72569 | Poughkeepsie, AR | 12.4 mi |
| 72433 | Hoxie, AR | 12.5 mi |
| 72457 | Portia, AR | 12.7 mi |
| 72445 | Minturn, AR | 13.3 mi |
| 72471 | Swifton, AR | 14 mi |
Questions about 72440
What is the ZIP+4 code for 72440?
72440 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 72440, you need to look up a specific street address to get them.
What city is 72440?
72440 is assigned to Lynn, Arkansas, in Lawrence 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.