ZIP Code 72577 — Sidney, AR
72577 is a standard (street delivery) ZIP code serving Sidney, Arkansas, in Izard 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 72577 at a glance
| ZIP code | 72577 |
|---|---|
| Primary city | Sidney |
| State | Arkansas (AR) |
| County | Izard FIPS 05065 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 815 |
| Coordinates | 36.030940, -91.713790 |
How ZIP+4 works in 72577
The four digits after the hyphen encode a delivery segment inside 72577. 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 72577 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 72577.
| ZIP | City | Distance |
|---|---|---|
| 72573 | Sage, AR | 5.5 mi |
| 72561 | Mount Pleasant, AR | 8.1 mi |
| 72532 | Evening Shade, AR | 8.1 mi |
| 72536 | Franklin, AR | 8.4 mi |
| 72584 | Violet Hill, AR | 10.7 mi |
| 72521 | Cave City, AR | 10.9 mi |
| 72526 | Cushman, AR | 11 mi |
| 72540 | Guion, AR | 12.8 mi |
| 72512 | Horseshoe Bend, AR | 13.4 mi |
| 72556 | Melbourne, AR | 13.7 mi |
| 72587 | Wiseman, AR | 14.3 mi |
| 72513 | Ash Flat, AR | 14.3 mi |
Questions about 72577
What is the ZIP+4 code for 72577?
72577 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 72577, you need to look up a specific street address to get them.
What city is 72577?
72577 is assigned to Sidney, Arkansas, in Izard 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.