ZIP Code 73434 — Foster, OK
73434 is a standard (street delivery) ZIP code serving Foster, Oklahoma, in Stephens 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 73434 at a glance
| ZIP code | 73434 |
|---|---|
| Primary city | Foster |
| State | Oklahoma (OK) |
| County | Stephens FIPS 40137 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 574 |
| Coordinates | 34.620830, -97.582860 |
How ZIP+4 works in 73434
The four digits after the hyphen encode a delivery segment inside 73434. 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 73434 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 73434.
| ZIP | City | Distance |
|---|---|---|
| 73488 | Tussy, OK | 8.9 mi |
| 73433 | Elmore City, OK | 9.9 mi |
| 73425 | Countyline, OK | 11.3 mi |
| 73491 | Velma, OK | 11.7 mi |
| 73487 | Tatums, OK | 12.9 mi |
| 73481 | Ratliff City, OK | 14.2 mi |
| 73444 | Hennepin, OK | 14.6 mi |
| 73052 | Lindsay, OK | 14.7 mi |
| 73057 | Maysville, OK | 16.8 mi |
| 73533 | Duncan, OK | 17.4 mi |
| 73011 | Bradley, OK | 17.9 mi |
| 73435 | Fox, OK | 18.7 mi |
Questions about 73434
What is the ZIP+4 code for 73434?
73434 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 73434, you need to look up a specific street address to get them.
What city is 73434?
73434 is assigned to Foster, Oklahoma, in Stephens 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.