ZIP Code 45154 — Mount Orab, OH
45154 is a standard (street delivery) ZIP code serving Mount Orab, Ohio, in Brown 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 45154 at a glance
| ZIP code | 45154 |
|---|---|
| Primary city | Mount Orab |
| State | Ohio (OH) |
| County | Brown FIPS 39015 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 8,969 |
| Coordinates | 39.061370, -83.919970 |
How ZIP+4 works in 45154
The four digits after the hyphen encode a delivery segment inside 45154. 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 45154 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 45154.
| ZIP | City | Distance |
|---|---|---|
| 45176 | Williamsburg, OH | 5.7 mi |
| 45171 | Sardinia, OH | 7.4 mi |
| 45118 | Fayetteville, OH | 7.7 mi |
| 45155 | Mowrystown, OH | 9.1 mi |
| 45106 | Bethel, OH | 11.2 mi |
| 45130 | Hamersville, OH | 11.3 mi |
| 45158 | Newtonsville, OH | 11.9 mi |
| 45142 | Lynchburg, OH | 12 mi |
| 45103 | Batavia, OH | 12 mi |
| 45160 | Owensville, OH | 12.4 mi |
| 45119 | Feesburg, OH | 13.3 mi |
| 45121 | Georgetown, OH | 13.4 mi |
Questions about 45154
What is the ZIP+4 code for 45154?
45154 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 45154, you need to look up a specific street address to get them.
What city is 45154?
45154 is assigned to Mount Orab, Ohio, in Brown 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.