ZIP Code 74531 — Calvin, OK
74531 is a standard (street delivery) ZIP code serving Calvin, Oklahoma, in Hughes 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 74531 at a glance
| ZIP code | 74531 |
|---|---|
| Primary city | Calvin |
| State | Oklahoma (OK) |
| County | Hughes FIPS 40063 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 834 |
| Coordinates | 34.877700, -96.240350 |
How ZIP+4 works in 74531
The four digits after the hyphen encode a delivery segment inside 74531. 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 74531 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 74531.
| ZIP | City | Distance |
|---|---|---|
| 74827 | Atwood, OK | 7.2 mi |
| 74570 | Stuart, OK | 7.7 mi |
| 74825 | Allen, OK | 10.4 mi |
| 74848 | Holdenville, OK | 15.4 mi |
| 74850 | Lamar, OK | 18.2 mi |
| 74576 | Wardville, OK | 18.2 mi |
| 74867 | Sasakwa, OK | 18.3 mi |
| 74534 | Centrahoma, OK | 19.2 mi |
| 74572 | Tupelo, OK | 19.6 mi |
| 74844 | Francis, OK | 19.7 mi |
| 74538 | Coalgate, OK | 20.9 mi |
| 74553 | Kiowa, OK | 21.6 mi |
Questions about 74531
What is the ZIP+4 code for 74531?
74531 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 74531, you need to look up a specific street address to get them.
What city is 74531?
74531 is assigned to Calvin, Oklahoma, in Hughes 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.