ZIP Code 39456 — Mclain, MS
39456 is a standard (street delivery) ZIP code serving Mclain, Mississippi, in Greene 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 39456 at a glance
| ZIP code | 39456 |
|---|---|
| Primary city | Mclain |
| State | Mississippi (MS) |
| County | Greene FIPS 28041 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 1,027 |
| Coordinates | 31.028200, -88.818190 |
How ZIP+4 works in 39456
The four digits after the hyphen encode a delivery segment inside 39456. 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 39456 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 39456.
| ZIP | City | Distance |
|---|---|---|
| 39423 | Beaumont, MS | 11.6 mi |
| 39461 | Neely, MS | 11.9 mi |
| 39425 | Brooklyn, MS | 14.6 mi |
| 39451 | Leakesville, MS | 15.3 mi |
| 39452 | Lucedale, MS | 16.9 mi |
| 39577 | Wiggins, MS | 17.7 mi |
| 39462 | New Augusta, MS | 19.4 mi |
| 39476 | Richton, MS | 24.4 mi |
| 39573 | Perkinston, MS | 26 mi |
| 36584 | Vinegar Bend, AL | 28.2 mi |
| 39561 | Mchenry, MS | 30 mi |
| 39362 | State Line, MS | 30.1 mi |
Questions about 39456
What is the ZIP+4 code for 39456?
39456 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 39456, you need to look up a specific street address to get them.
What city is 39456?
39456 is assigned to Mclain, Mississippi, in Greene 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.