ZIP Code 42742 — Gradyville, KY
42742 is a standard (street delivery) ZIP code serving Gradyville, Kentucky, in Adair 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 42742 at a glance
| ZIP code | 42742 |
|---|---|
| Primary city | Gradyville |
| State | Kentucky (KY) |
| County | Adair FIPS 21001 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 72 |
| Coordinates | 37.077740, -85.478880 |
How ZIP+4 works in 42742
The four digits after the hyphen encode a delivery segment inside 42742. 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 42742 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 42742.
| ZIP | City | Distance |
|---|---|---|
| 42129 | Edmonton, KY | 8.6 mi |
| 42715 | Breeding, KY | 9.9 mi |
| 42728 | Columbia, KY | 10.7 mi |
| 42743 | Greensburg, KY | 10.9 mi |
| 42214 | Center, KY | 12.2 mi |
| 42154 | Knob Lick, KY | 13.7 mi |
| 42741 | Glens Fork, KY | 13.9 mi |
| 42746 | Hardyville, KY | 16.8 mi |
| 42759 | Marrowbone, KY | 17.3 mi |
| 42124 | Beaumont, KY | 17.4 mi |
| 42722 | Canmer, KY | 19 mi |
| 42166 | Summer Shade, KY | 19 mi |
Questions about 42742
What is the ZIP+4 code for 42742?
42742 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 42742, you need to look up a specific street address to get them.
What city is 42742?
42742 is assigned to Gradyville, Kentucky, in Adair 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.