ZIP Code 43050 — Mount Vernon, OH
43050 is a standard (street delivery) ZIP code serving Mount Vernon, Ohio, in Knox 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 43050 at a glance
| ZIP code | 43050 |
|---|---|
| Primary city | Mount Vernon |
| State | Ohio (OH) |
| County | Knox FIPS 39083 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 31,074 |
| Coordinates | 40.371880, -82.495360 |
How ZIP+4 works in 43050
The four digits after the hyphen encode a delivery segment inside 43050. 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 43050 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 43050.
| ZIP | City | Distance |
|---|---|---|
| 43027 | Homer, OH | 8.3 mi |
| 43022 | Gambier, OH | 8.4 mi |
| 43080 | Utica, OH | 9.5 mi |
| 43019 | Fredericktown, OH | 9.6 mi |
| 43028 | Howard, OH | 10.6 mi |
| 43011 | Centerburg, OH | 10.8 mi |
| 43350 | Sparta, OH | 10.9 mi |
| 43037 | Martinsburg, OH | 11.3 mi |
| 43317 | Chesterville, OH | 12.2 mi |
| 43005 | Bladensburg, OH | 13.5 mi |
| 44822 | Butler, OH | 13.7 mi |
| 43013 | Croton, OH | 14.1 mi |
Questions about 43050
What is the ZIP+4 code for 43050?
43050 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 43050, you need to look up a specific street address to get them.
What city is 43050?
43050 is assigned to Mount Vernon, Ohio, in Knox 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.