ZIP Code 45681 — South Salem, OH
45681 is a standard (street delivery) ZIP code serving South Salem, Ohio, in Ross 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 45681 at a glance
| ZIP code | 45681 |
|---|---|
| Primary city | South Salem |
| State | Ohio (OH) |
| County | Ross FIPS 39141 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 1,451 |
| Coordinates | 39.305510, -83.248070 |
How ZIP+4 works in 45681
The four digits after the hyphen encode a delivery segment inside 45681. 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 45681 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 45681.
| ZIP | City | Distance |
|---|---|---|
| 45617 | Bourneville, OH | 5.2 mi |
| 45612 | Bainbridge, OH | 6.3 mi |
| 45628 | Frankfort, OH | 6.4 mi |
| 45123 | Greenfield, OH | 8.1 mi |
| 45624 | Cynthiana, OH | 10.6 mi |
| 43115 | Clarksburg, OH | 13.5 mi |
| 45601 | Chillicothe, OH | 15.6 mi |
| 45646 | Latham, OH | 16.2 mi |
| 45135 | Leesburg, OH | 16.4 mi |
| 45690 | Waverly, OH | 17.2 mi |
| 45172 | Sinking Spring, OH | 17.6 mi |
| 43145 | New Holland, OH | 17.8 mi |
Questions about 45681
What is the ZIP+4 code for 45681?
45681 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 45681, you need to look up a specific street address to get them.
What city is 45681?
45681 is assigned to South Salem, Ohio, in Ross 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.