ZIP Code 43939 — Mount Pleasant, OH
43939 is a standard (street delivery) ZIP code serving Mount Pleasant, Ohio, in Jefferson 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 43939 at a glance
| ZIP code | 43939 |
|---|---|
| Primary city | Mount Pleasant |
| State | Ohio (OH) |
| County | Jefferson FIPS 39081 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 341 |
| Coordinates | 40.167230, -80.799930 |
How ZIP+4 works in 43939
The four digits after the hyphen encode a delivery segment inside 43939. 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 43939 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 43939.
| ZIP | City | Distance |
|---|---|---|
| 43935 | Martins Ferry, OH | 3.9 mi |
| 43917 | Dillonvale, OH | 3.9 mi |
| 43905 | Barton, OH | 4.4 mi |
| 43971 | Yorkville, OH | 4.6 mi |
| 43974 | Harrisville, OH | 4.7 mi |
| 43901 | Adena, OH | 4.9 mi |
| 43943 | Rayland, OH | 5.3 mi |
| 43963 | Tiltonsville, OH | 5.4 mi |
| 43912 | Bridgeport, OH | 5.5 mi |
| 43934 | Lansing, OH | 6.4 mi |
| 43909 | Blaine, OH | 6.9 mi |
| 43948 | Smithfield, OH | 7.1 mi |
Questions about 43939
What is the ZIP+4 code for 43939?
43939 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 43939, you need to look up a specific street address to get them.
What city is 43939?
43939 is assigned to Mount Pleasant, Ohio, in Jefferson 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.