ZIP Code 42048 — Hardin, KY
42048 is a standard (street delivery) ZIP code serving Hardin, Kentucky, in Marshall 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 42048 at a glance
| ZIP code | 42048 |
|---|---|
| Primary city | Hardin |
| State | Kentucky (KY) |
| County | Marshall FIPS 21157 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 2,083 |
| Coordinates | 36.766760, -88.235330 |
How ZIP+4 works in 42048
The four digits after the hyphen encode a delivery segment inside 42048. 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 42048 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 42048.
| ZIP | City | Distance |
|---|---|---|
| 42036 | Dexter, KY | 3.1 mi |
| 42020 | Almo, KY | 6.2 mi |
| 42025 | Benton, KY | 8.3 mi |
| 42071 | Murray, KY | 10.4 mi |
| 42054 | Kirksey, KY | 11.4 mi |
| 42044 | Gilbertsville, KY | 13.3 mi |
| 42076 | New Concord, KY | 16.3 mi |
| 42049 | Hazel, KY | 17.7 mi |
| 42040 | Farmington, KY | 17.8 mi |
| 42082 | Symsonia, KY | 17.9 mi |
| 42029 | Calvert City, KY | 18.8 mi |
| 42045 | Grand Rivers, KY | 21.1 mi |
Questions about 42048
What is the ZIP+4 code for 42048?
42048 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 42048, you need to look up a specific street address to get them.
What city is 42048?
42048 is assigned to Hardin, Kentucky, in Marshall 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.