ZIP Code 63456 — Monroe City, MO
63456 is a standard (street delivery) ZIP code serving Monroe City, Missouri, in Marion 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 63456 at a glance
| ZIP code | 63456 |
|---|---|
| Primary city | Monroe City |
| State | Missouri (MO) |
| County | Marion FIPS 29127 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 4,749 |
| Coordinates | 39.653640, -91.726930 |
How ZIP+4 works in 63456
The four digits after the hyphen encode a delivery segment inside 63456. 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 63456 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 63456.
| ZIP | City | Distance |
|---|---|---|
| 63443 | Hunnewell, MO | 7.5 mi |
| 65283 | Stoutsville, MO | 11.6 mi |
| 63439 | Emden, MO | 12.5 mi |
| 63463 | Philadelphia, MO | 13.3 mi |
| 63461 | Palmyra, MO | 13.5 mi |
| 63436 | Center, MO | 14.3 mi |
| 63401 | Hannibal, MO | 14.4 mi |
| 63468 | Shelbina, MO | 15.3 mi |
| 63462 | Perry, MO | 16 mi |
| 63459 | New London, MO | 19.1 mi |
| 63454 | Maywood, MO | 19.1 mi |
| 65282 | Santa Fe, MO | 19.1 mi |
Questions about 63456
What is the ZIP+4 code for 63456?
63456 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 63456, you need to look up a specific street address to get them.
What city is 63456?
63456 is assigned to Monroe City, Missouri, in Marion 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.