ZIP Code 45351 — Osgood, OH
45351 is a standard (street delivery) ZIP code serving Osgood, Ohio, in Darke 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 45351 at a glance
| ZIP code | 45351 |
|---|---|
| Primary city | Osgood |
| State | Ohio (OH) |
| County | Darke FIPS 39037 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 328 |
| Coordinates | 40.339540, -84.495740 |
How ZIP+4 works in 45351
The four digits after the hyphen encode a delivery segment inside 45351. 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 45351 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 45351.
| ZIP | City | Distance |
|---|---|---|
| 45388 | Yorkshire, OH | 1.2 mi |
| 45860 | Maria Stein, OH | 3.9 mi |
| 45350 | North Star, OH | 4.2 mi |
| 45845 | Fort Loramie, OH | 6.2 mi |
| 45380 | Versailles, OH | 6.6 mi |
| 45826 | Chickasaw, OH | 6.7 mi |
| 45865 | Minster, OH | 7.5 mi |
| 45310 | Burkettsville, OH | 7.8 mi |
| 45362 | Rossburg, OH | 8.1 mi |
| 45883 | Saint Henry, OH | 8.3 mi |
| 45348 | New Weston, OH | 8.4 mi |
| 45363 | Russia, OH | 8.6 mi |
Questions about 45351
What is the ZIP+4 code for 45351?
45351 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 45351, you need to look up a specific street address to get them.
What city is 45351?
45351 is assigned to Osgood, Ohio, in Darke 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.