ZIP Code 42031 — Clinton, KY
42031 is a standard (street delivery) ZIP code serving Clinton, Kentucky, in Hickman 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 42031 at a glance
| ZIP code | 42031 |
|---|---|
| Primary city | Clinton |
| State | Kentucky (KY) |
| County | Hickman FIPS 21105 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 3,411 |
| Coordinates | 36.687410, -88.988640 |
How ZIP+4 works in 42031
The four digits after the hyphen encode a delivery segment inside 42031. 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 42031 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 42031.
| ZIP | City | Distance |
|---|---|---|
| 42032 | Columbus, KY | 7.7 mi |
| 42021 | Arlington, KY | 7.9 mi |
| 42039 | Fancy Farm, KY | 11.2 mi |
| 42041 | Fulton, KY | 11.6 mi |
| 42023 | Bardwell, KY | 13 mi |
| 42085 | Water Valley, KY | 13.2 mi |
| 42088 | Wingo, KY | 13.8 mi |
| 42050 | Hickman, KY | 15.3 mi |
| 38257 | South Fulton, TN | 16.5 mi |
| 42035 | Cunningham, KY | 17.1 mi |
| 63845 | East Prairie, MO | 18.1 mi |
| 42061 | Lowes, KY | 18.1 mi |
Questions about 42031
What is the ZIP+4 code for 42031?
42031 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 42031, you need to look up a specific street address to get them.
What city is 42031?
42031 is assigned to Clinton, Kentucky, in Hickman 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.