ZIP Code 42045 — Grand Rivers, KY
42045 is a standard (street delivery) ZIP code serving Grand Rivers, Kentucky, in Livingston 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 42045 at a glance
| ZIP code | 42045 |
|---|---|
| Primary city | Grand Rivers |
| State | Kentucky (KY) |
| County | Livingston FIPS 21139 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 1,931 |
| Coordinates | 37.072000, -88.264530 |
How ZIP+4 works in 42045
The four digits after the hyphen encode a delivery segment inside 42045. 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 42045 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 42045.
| ZIP | City | Distance |
|---|---|---|
| 42055 | Kuttawa, KY | 5.3 mi |
| 42083 | Tiline, KY | 6.4 mi |
| 42037 | Dycusburg, KY | 7.4 mi |
| 42044 | Gilbertsville, KY | 7.9 mi |
| 42029 | Calvert City, KY | 8.1 mi |
| 42058 | Ledbetter, KY | 11.5 mi |
| 42028 | Burna, KY | 12.1 mi |
| 42081 | Smithland, KY | 13.2 mi |
| 42038 | Eddyville, KY | 13.4 mi |
| 42078 | Salem, KY | 15 mi |
| 42025 | Benton, KY | 15.3 mi |
| 42411 | Fredonia, KY | 15.8 mi |
Questions about 42045
What is the ZIP+4 code for 42045?
42045 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 42045, you need to look up a specific street address to get them.
What city is 42045?
42045 is assigned to Grand Rivers, Kentucky, in Livingston 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.