ZIP Code 73720 — Bison, OK
73720 is a standard (street delivery) ZIP code serving Bison, Oklahoma, in Garfield 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 73720 at a glance
| ZIP code | 73720 |
|---|---|
| Primary city | Bison |
| State | Oklahoma (OK) |
| County | Garfield FIPS 40047 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 221 |
| Coordinates | 36.197300, -97.870380 |
How ZIP+4 works in 73720
The four digits after the hyphen encode a delivery segment inside 73720. 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 73720 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 73720.
| ZIP | City | Distance |
|---|---|---|
| 73773 | Waukomis, OK | 5 mi |
| 73742 | Hennessey, OK | 7.5 mi |
| 73705 | Enid, OK | 9.9 mi |
| 73733 | Douglas, OK | 10.6 mi |
| 73735 | Drummond, OK | 11.4 mi |
| 73056 | Marshall, OK | 14 mi |
| 73736 | Fairmont, OK | 14.5 mi |
| 73734 | Dover, OK | 14.7 mi |
| 73701 | Enid, OK | 16.2 mi |
| 73718 | Ames, OK | 16.6 mi |
| 73703 | Enid, OK | 17.5 mi |
| 73754 | Lahoma, OK | 18.2 mi |
Questions about 73720
What is the ZIP+4 code for 73720?
73720 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 73720, you need to look up a specific street address to get them.
What city is 73720?
73720 is assigned to Bison, Oklahoma, in Garfield 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.