ZIP Code 42370 — Rosine, KY
42370 is a standard (street delivery) ZIP code serving Rosine, Kentucky, in Ohio 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 42370 at a glance
| ZIP code | 42370 |
|---|---|
| Primary city | Rosine |
| State | Kentucky (KY) |
| County | Ohio FIPS 21183 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 16 |
| Coordinates | 37.449700, -86.741210 |
How ZIP+4 works in 42370
The four digits after the hyphen encode a delivery segment inside 42370. 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 42370 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 42370.
| ZIP | City | Distance |
|---|---|---|
| 42349 | Horse Branch, KY | 4 mi |
| 42333 | Cromwell, KY | 5.1 mi |
| 42361 | Olaton, KY | 5.4 mi |
| 42338 | Dundee, KY | 7.3 mi |
| 42347 | Hartford, KY | 9.5 mi |
| 42320 | Beaver Dam, KY | 9.9 mi |
| 42354 | Mchenry, KY | 11.3 mi |
| 42343 | Fordsville, KY | 13.1 mi |
| 42721 | Caneyville, KY | 13.6 mi |
| 40119 | Falls Of Rough, KY | 15.2 mi |
| 42378 | Whitesville, KY | 15.6 mi |
| 42261 | Morgantown, KY | 16 mi |
Questions about 42370
What is the ZIP+4 code for 42370?
42370 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 42370, you need to look up a specific street address to get them.
What city is 42370?
42370 is assigned to Rosine, Kentucky, in Ohio 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.