ZIP Code 64439 — Dearborn, MO
64439 is a standard (street delivery) ZIP code serving Dearborn, Missouri, in Platte 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 64439 at a glance
| ZIP code | 64439 |
|---|---|
| Primary city | Dearborn |
| State | Missouri (MO) |
| County | Platte FIPS 29165 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 1,537 |
| Coordinates | 39.523710, -94.749860 |
How ZIP+4 works in 64439
The four digits after the hyphen encode a delivery segment inside 64439. 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 64439 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 64439.
| ZIP | City | Distance |
|---|---|---|
| 64018 | Camden Point, MO | 5.1 mi |
| 64444 | Edgerton, MO | 6.5 mi |
| 64448 | Faucett, MO | 6.6 mi |
| 64401 | Agency, MO | 7.9 mi |
| 64098 | Weston, MO | 9 mi |
| 64440 | De Kalb, MO | 9.7 mi |
| 64454 | Gower, MO | 10.1 mi |
| 64079 | Platte City, MO | 11.4 mi |
| 64492 | Trimble, MO | 11.9 mi |
| 64163 | Kansas City, MO | 13.3 mi |
| 64089 | Smithville, MO | 13.5 mi |
| 66027 | Fort Leavenworth, KS | 14.1 mi |
Questions about 64439
What is the ZIP+4 code for 64439?
64439 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 64439, you need to look up a specific street address to get them.
What city is 64439?
64439 is assigned to Dearborn, Missouri, in Platte 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.