ZIP Code 43351 — Upper Sandusky, OH
43351 is a standard (street delivery) ZIP code serving Upper Sandusky, Ohio, in Wyandot 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 43351 at a glance
| ZIP code | 43351 |
|---|---|
| Primary city | Upper Sandusky |
| State | Ohio (OH) |
| County | Wyandot FIPS 39175 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 10,457 |
| Coordinates | 40.825010, -83.304240 |
How ZIP+4 works in 43351
The four digits after the hyphen encode a delivery segment inside 43351. 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 43351 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 43351.
| ZIP | City | Distance |
|---|---|---|
| 43330 | Kirby, OH | 6.1 mi |
| 43323 | Harpster, OH | 7 mi |
| 43359 | Wharton, OH | 8.4 mi |
| 44849 | Nevada, OH | 9.1 mi |
| 43316 | Carey, OH | 9.7 mi |
| 43337 | Morral, OH | 10.3 mi |
| 44844 | Mccutchenville, OH | 11.8 mi |
| 44882 | Sycamore, OH | 12.1 mi |
| 45843 | Forest, OH | 12.4 mi |
| 45867 | Mount Blanchard, OH | 13.2 mi |
| 45890 | Vanlue, OH | 14.3 mi |
| 43341 | New Bloomington, OH | 15.8 mi |
Questions about 43351
What is the ZIP+4 code for 43351?
43351 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 43351, you need to look up a specific street address to get them.
What city is 43351?
43351 is assigned to Upper Sandusky, Ohio, in Wyandot 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.