ZIP Code 45101 — Aberdeen, OH
45101 is a standard (street delivery) ZIP code serving Aberdeen, 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 45101 at a glance
| ZIP code | 45101 |
|---|---|
| Primary city | Aberdeen |
| State | Ohio (OH) |
| County | Brown FIPS 39015 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 2,035 |
| Coordinates | 38.691640, -83.740240 |
How ZIP+4 works in 45101
The four digits after the hyphen encode a delivery segment inside 45101. 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 45101 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 45101.
| ZIP | City | Distance |
|---|---|---|
| 45167 | Ripley, OH | 6.4 mi |
| 41056 | Maysville, KY | 6.7 mi |
| 45144 | Manchester, OH | 6.9 mi |
| 45105 | Bentonville, OH | 8 mi |
| 45115 | Decatur, OH | 8.2 mi |
| 41034 | Dover, KY | 8.9 mi |
| 45168 | Russellville, OH | 11.2 mi |
| 41002 | Augusta, KY | 13.3 mi |
| 45693 | West Union, OH | 13.8 mi |
| 41044 | Germantown, KY | 13.9 mi |
| 41055 | Mayslick, KY | 13.9 mi |
| 41189 | Tollesboro, KY | 14 mi |
Questions about 45101
What is the ZIP+4 code for 45101?
45101 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 45101, you need to look up a specific street address to get them.
What city is 45101?
45101 is assigned to Aberdeen, 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.