ZIP Code 45107 — Blanchester, OH
45107 is a standard (street delivery) ZIP code serving Blanchester, Ohio, in Clinton 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 45107 at a glance
| ZIP code | 45107 |
|---|---|
| Primary city | Blanchester |
| State | Ohio (OH) |
| County | Clinton FIPS 39027 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 9,190 |
| Coordinates | 39.288880, -83.969670 |
How ZIP+4 works in 45107
The four digits after the hyphen encode a delivery segment inside 45107. 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 45107 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 45107.
| ZIP | City | Distance |
|---|---|---|
| 45148 | Midland, OH | 4.5 mi |
| 45162 | Pleasant Plain, OH | 6 mi |
| 45113 | Clarksville, OH | 7.7 mi |
| 45118 | Fayetteville, OH | 8.3 mi |
| 45152 | Morrow, OH | 9.2 mi |
| 45158 | Newtonsville, OH | 9.3 mi |
| 45146 | Martinsville, OH | 9.3 mi |
| 45122 | Goshen, OH | 9.5 mi |
| 45142 | Lynchburg, OH | 10.3 mi |
| 45054 | Oregonia, OH | 11.7 mi |
| 45177 | Wilmington, OH | 13.8 mi |
| 45065 | South Lebanon, OH | 14.2 mi |
Questions about 45107
What is the ZIP+4 code for 45107?
45107 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 45107, you need to look up a specific street address to get them.
What city is 45107?
45107 is assigned to Blanchester, Ohio, in Clinton 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.