ZIP Code 73673 — Willow, OK
73673 is a standard (street delivery) ZIP code serving Willow, Oklahoma, in Greer 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 73673 at a glance
| ZIP code | 73673 |
|---|---|
| Primary city | Willow |
| State | Oklahoma (OK) |
| County | Greer FIPS 40055 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 302 |
| Coordinates | 35.046490, -99.637620 |
How ZIP+4 works in 73673
The four digits after the hyphen encode a delivery segment inside 73673. 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 73673 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 73673.
| ZIP | City | Distance |
|---|---|---|
| 73554 | Mangum, OK | 13.3 mi |
| 73547 | Granite, OK | 13.8 mi |
| 73627 | Carter, OK | 15 mi |
| 73645 | Erick, OK | 15.7 mi |
| 73571 | Vinson, OK | 18 mi |
| 73662 | Sayre, OK | 18.6 mi |
| 73655 | Lone Wolf, OK | 22.2 mi |
| 73668 | Texola, OK | 22.9 mi |
| 73664 | Sentinel, OK | 24.3 mi |
| 73556 | Martha, OK | 26.3 mi |
| 73644 | Elk City, OK | 27.3 mi |
| 73526 | Blair, OK | 27.3 mi |
Questions about 73673
What is the ZIP+4 code for 73673?
73673 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 73673, you need to look up a specific street address to get them.
What city is 73673?
73673 is assigned to Willow, Oklahoma, in Greer 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.