ZIP Code 40348 — Millersburg, KY
40348 is a standard (street delivery) ZIP code serving Millersburg, Kentucky, in Bourbon 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 40348 at a glance
| ZIP code | 40348 |
|---|---|
| Primary city | Millersburg |
| State | Kentucky (KY) |
| County | Bourbon FIPS 21017 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 625 |
| Coordinates | 38.302960, -84.146130 |
How ZIP+4 works in 40348
The four digits after the hyphen encode a delivery segment inside 40348. 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 40348 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 40348.
| ZIP | City | Distance |
|---|---|---|
| 40311 | Carlisle, KY | 6.8 mi |
| 40361 | Paris, KY | 7.9 mi |
| 41031 | Cynthiana, KY | 10.8 mi |
| 40357 | North Middletown, KY | 11.1 mi |
| 40374 | Sharpsburg, KY | 14.5 mi |
| 40350 | Moorefield, KY | 14.5 mi |
| 41064 | Mount Olivet, KY | 15.2 mi |
| 41039 | Ewing, KY | 16.3 mi |
| 40353 | Mount Sterling, KY | 19.6 mi |
| 40516 | Lexington, KY | 19.8 mi |
| 41003 | Berry, KY | 20.6 mi |
| 41055 | Mayslick, KY | 21.1 mi |
Questions about 40348
What is the ZIP+4 code for 40348?
40348 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 40348, you need to look up a specific street address to get them.
What city is 40348?
40348 is assigned to Millersburg, Kentucky, in Bourbon 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.