ZIP Code 64620 — Altamont, MO
64620 is a standard (street delivery) ZIP code serving Altamont, Missouri, in Daviess 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 64620 at a glance
| ZIP code | 64620 |
|---|---|
| Primary city | Altamont |
| State | Missouri (MO) |
| County | Daviess FIPS 29061 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 626 |
| Coordinates | 39.896170, -94.090940 |
How ZIP+4 works in 64620
The four digits after the hyphen encode a delivery segment inside 64620. 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 64620 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 64620.
| ZIP | City | Distance |
|---|---|---|
| 64689 | Winston, MO | 3.6 mi |
| 64497 | Weatherby, MO | 7.3 mi |
| 64640 | Gallatin, MO | 7.7 mi |
| 64649 | Kidder, MO | 8.4 mi |
| 64670 | Pattonsburg, MO | 10.9 mi |
| 64647 | Jameson, MO | 11.3 mi |
| 64644 | Hamilton, MO | 12.3 mi |
| 64429 | Cameron, MO | 13.1 mi |
| 64469 | Maysville, MO | 14.3 mi |
| 64636 | Coffey, MO | 16.4 mi |
| 64648 | Jamesport, MO | 16.6 mi |
| 64654 | Lock Springs, MO | 17 mi |
Questions about 64620
What is the ZIP+4 code for 64620?
64620 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 64620, you need to look up a specific street address to get them.
What city is 64620?
64620 is assigned to Altamont, Missouri, in Daviess 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.