ZIP Code 63430 — Alexandria, MO
63430 is a standard (street delivery) ZIP code serving Alexandria, Missouri, in Clark 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 63430 at a glance
| ZIP code | 63430 |
|---|---|
| Primary city | Alexandria |
| State | Missouri (MO) |
| County | Clark FIPS 29045 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 457 |
| Coordinates | 40.389720, -91.539580 |
How ZIP+4 works in 63430
The four digits after the hyphen encode a delivery segment inside 63430. 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 63430 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 63430.
| ZIP | City | Distance |
|---|---|---|
| 63472 | Wayland, MO | 2.3 mi |
| 52632 | Keokuk, IA | 6.3 mi |
| 52619 | Argyle, IA | 9.4 mi |
| 63466 | Saint Patrick, MO | 9.5 mi |
| 63445 | Kahoka, MO | 9.5 mi |
| 52639 | Montrose, IA | 10.3 mi |
| 62379 | Warsaw, IL | 10.9 mi |
| 63465 | Revere, MO | 12.1 mi |
| 62341 | Hamilton, IL | 12.5 mi |
| 63435 | Canton, MO | 13.1 mi |
| 62354 | Nauvoo, IL | 14.1 mi |
| 62373 | Sutter, IL | 14.2 mi |
Questions about 63430
What is the ZIP+4 code for 63430?
63430 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 63430, you need to look up a specific street address to get them.
What city is 63430?
63430 is assigned to Alexandria, Missouri, in Clark 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.