ZIP Code 63501 — Kirksville, MO
63501 is a standard (street delivery) ZIP code serving Kirksville, Missouri, in Adair 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 63501 at a glance
| ZIP code | 63501 |
|---|---|
| Primary city | Kirksville |
| State | Missouri (MO) |
| County | Adair FIPS 29001 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 21,218 |
| Coordinates | 40.167450, -92.590780 |
How ZIP+4 works in 63501
The four digits after the hyphen encode a delivery segment inside 63501. 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 63501 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 63501.
| ZIP | City | Distance |
|---|---|---|
| 63559 | Novinger, MO | 9.1 mi |
| 63533 | Brashear, MO | 10.6 mi |
| 63540 | Gibbs, MO | 10.8 mi |
| 63549 | La Plata, MO | 11.6 mi |
| 63546 | Greentop, MO | 12.1 mi |
| 63544 | Green Castle, MO | 14.7 mi |
| 63547 | Hurdland, MO | 15.2 mi |
| 63538 | Elmer, MO | 15.4 mi |
| 63561 | Queen City, MO | 17.2 mi |
| 63567 | Worthington, MO | 18 mi |
| 63539 | Ethel, MO | 19 mi |
| 63530 | Atlanta, MO | 19.4 mi |
Questions about 63501
What is the ZIP+4 code for 63501?
63501 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 63501, you need to look up a specific street address to get them.
What city is 63501?
63501 is assigned to Kirksville, Missouri, in Adair 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.