ZIP Code 64637 — Cowgill, MO
64637 is a standard (street delivery) ZIP code serving Cowgill, Missouri, in Caldwell 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 64637 at a glance
| ZIP code | 64637 |
|---|---|
| Primary city | Cowgill |
| State | Missouri (MO) |
| County | Caldwell FIPS 29025 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 492 |
| Coordinates | 39.574390, -93.915730 |
How ZIP+4 works in 64637
The four digits after the hyphen encode a delivery segment inside 64637. 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 64637 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 64637.
| ZIP | City | Distance |
|---|---|---|
| 64624 | Braymer, MO | 7 mi |
| 64671 | Polo, MO | 7.7 mi |
| 64650 | Kingston, MO | 8.6 mi |
| 64644 | Hamilton, MO | 12 mi |
| 64625 | Breckenridge, MO | 13.1 mi |
| 64656 | Ludlow, MO | 13.8 mi |
| 64084 | Rayville, MO | 15.2 mi |
| 64062 | Lawson, MO | 15.9 mi |
| 64638 | Dawn, MO | 16.3 mi |
| 64085 | Richmond, MO | 16.4 mi |
| 64649 | Kidder, MO | 16.7 mi |
| 64664 | Mooresville, MO | 18 mi |
Questions about 64637
What is the ZIP+4 code for 64637?
64637 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 64637, you need to look up a specific street address to get them.
What city is 64637?
64637 is assigned to Cowgill, Missouri, in Caldwell 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.