ZIP Code 38870 — Smithville, MS
38870 is a standard (street delivery) ZIP code serving Smithville, Mississippi, in Monroe 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 38870 at a glance
| ZIP code | 38870 |
|---|---|
| Primary city | Smithville |
| State | Mississippi (MS) |
| County | Monroe FIPS 28095 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 2,133 |
| Coordinates | 34.068860, -88.341250 |
How ZIP+4 works in 38870
The four digits after the hyphen encode a delivery segment inside 38870. 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 38870 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 38870.
| ZIP | City | Distance |
|---|---|---|
| 38821 | Amory, MS | 8.6 mi |
| 38848 | Greenwood Springs, MS | 9.3 mi |
| 35552 | Detroit, AL | 11.4 mi |
| 38858 | Nettleton, MS | 11.4 mi |
| 38876 | Tremont, MS | 11.9 mi |
| 38843 | Fulton, MS | 13.8 mi |
| 38844 | Gattman, MS | 16.6 mi |
| 38862 | Plantersville, MS | 17.4 mi |
| 35586 | Sulligent, AL | 17.8 mi |
| 38855 | Mantachie, MS | 19.6 mi |
| 38857 | Mooreville, MS | 19.9 mi |
| 35544 | Beaverton, AL | 20 mi |
Questions about 38870
What is the ZIP+4 code for 38870?
38870 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 38870, you need to look up a specific street address to get them.
What city is 38870?
38870 is assigned to Smithville, Mississippi, in Monroe 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.