ZIP Code 73742 — Hennessey, OK
73742 is a standard (street delivery) ZIP code serving Hennessey, Oklahoma, in Kingfisher 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 73742 at a glance
| ZIP code | 73742 |
|---|---|
| Primary city | Hennessey |
| State | Oklahoma (OK) |
| County | Kingfisher FIPS 40073 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 3,906 |
| Coordinates | 36.096320, -97.919070 |
How ZIP+4 works in 73742
The four digits after the hyphen encode a delivery segment inside 73742. 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 73742 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 73742.
| ZIP | City | Distance |
|---|---|---|
| 73720 | Bison, OK | 7.5 mi |
| 73734 | Dover, OK | 8.5 mi |
| 73773 | Waukomis, OK | 11.2 mi |
| 73756 | Loyal, OK | 13.7 mi |
| 73735 | Drummond, OK | 14.4 mi |
| 73718 | Ames, OK | 15.9 mi |
| 73733 | Douglas, OK | 16.5 mi |
| 73750 | Kingfisher, OK | 16.8 mi |
| 73705 | Enid, OK | 16.8 mi |
| 73056 | Marshall, OK | 17.4 mi |
| 73028 | Crescent, OK | 18.4 mi |
| 73736 | Fairmont, OK | 21.5 mi |
Questions about 73742
What is the ZIP+4 code for 73742?
73742 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 73742, you need to look up a specific street address to get them.
What city is 73742?
73742 is assigned to Hennessey, Oklahoma, in Kingfisher 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.