ZIP Code 65203 — Columbia, MO
65203 is a standard (street delivery) ZIP code serving Columbia, Missouri, in Boone 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 65203 at a glance
| ZIP code | 65203 |
|---|---|
| Primary city | Columbia |
| State | Missouri (MO) |
| County | Boone FIPS 29019 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 61,539 |
| Coordinates | 38.894970, -92.399280 |
How ZIP+4 works in 65203
The four digits after the hyphen encode a delivery segment inside 65203. 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 65203 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.
Other ZIP codes in Columbia
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 65203.
| ZIP | City | Distance |
|---|---|---|
| 65215 | Columbia, MO | 5.8 mi |
| 65216 | Columbia, MO | 5.9 mi |
| 65287 | Wooldridge, MO | 6.5 mi |
| 65201 | Columbia, MO | 8.4 mi |
| 65046 | Jamestown, MO | 9.2 mi |
| 65202 | Columbia, MO | 10 mi |
| 65279 | Rocheport, MO | 10.4 mi |
| 65010 | Ashland, MO | 11.2 mi |
| 65068 | Prairie Home, MO | 11.7 mi |
| 65039 | Hartsburg, MO | 13.6 mi |
| 65256 | Harrisburg, MO | 16.3 mi |
| 65255 | Hallsville, MO | 16.5 mi |
Questions about 65203
What is the ZIP+4 code for 65203?
65203 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 65203, you need to look up a specific street address to get them.
What city is 65203?
65203 is assigned to Columbia, Missouri, in Boone 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.