ZIP Code 40448 — Mckinney, KY
40448 is a standard (street delivery) ZIP code serving Mckinney, Kentucky, in Lincoln 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 40448 at a glance
| ZIP code | 40448 |
|---|---|
| Primary city | Mckinney |
| State | Kentucky (KY) |
| County | Lincoln FIPS 21137 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Coordinates | 37.456240, -84.757990 |
How ZIP+4 works in 40448
The four digits after the hyphen encode a delivery segment inside 40448. 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 40448 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 40448.
| ZIP | City | Distance |
|---|---|---|
| 40437 | Hustonville, KY | 5.4 mi |
| 40484 | Stanford, KY | 6.1 mi |
| 42541 | Middleburg, KY | 6.3 mi |
| 40442 | Kings Mountain, KY | 7.4 mi |
| 40489 | Waynesburg, KY | 8.8 mi |
| 40440 | Junction City, KY | 9.2 mi |
| 40464 | Parksville, KY | 10.9 mi |
| 42566 | Yosemite, KY | 11.9 mi |
| 40422 | Danville, KY | 13.1 mi |
| 40419 | Crab Orchard, KY | 14.6 mi |
| 42539 | Liberty, KY | 14.9 mi |
| 42567 | Eubank, KY | 15.7 mi |
Questions about 40448
What is the ZIP+4 code for 40448?
40448 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 40448, you need to look up a specific street address to get them.
What city is 40448?
40448 is assigned to Mckinney, Kentucky, in Lincoln 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.