ZIP Code 42566 — Yosemite, KY
42566 is a standard (street delivery) ZIP code serving Yosemite, Kentucky, in Casey 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 42566 at a glance
| ZIP code | 42566 |
|---|---|
| Primary city | Yosemite |
| State | Kentucky (KY) |
| County | Casey FIPS 21045 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 541 |
| Coordinates | 37.283890, -84.779320 |
How ZIP+4 works in 42566
The four digits after the hyphen encode a delivery segment inside 42566. 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 42566 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 42566.
| ZIP | City | Distance |
|---|---|---|
| 42516 | Bethelridge, KY | 4.2 mi |
| 40442 | Kings Mountain, KY | 5.5 mi |
| 42541 | Middleburg, KY | 6.4 mi |
| 42553 | Science Hill, KY | 8.9 mi |
| 40489 | Waynesburg, KY | 9.3 mi |
| 42539 | Liberty, KY | 9.6 mi |
| 42567 | Eubank, KY | 9.7 mi |
| 42565 | Windsor, KY | 11.4 mi |
| 40437 | Hustonville, KY | 11.9 mi |
| 40448 | Mckinney, KY | 11.9 mi |
| 42528 | Dunnville, KY | 14.8 mi |
| 42503 | Somerset, KY | 16.5 mi |
Questions about 42566
What is the ZIP+4 code for 42566?
42566 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 42566, you need to look up a specific street address to get them.
What city is 42566?
42566 is assigned to Yosemite, Kentucky, in Casey 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.