ZIP Code 73528 — Chattanooga, OK
73528 is a standard (street delivery) ZIP code serving Chattanooga, Oklahoma, in Cotton 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 73528 at a glance
| ZIP code | 73528 |
|---|---|
| Primary city | Chattanooga |
| State | Oklahoma (OK) |
| County | Cotton FIPS 40033 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 617 |
| Coordinates | 34.403300, -98.645200 |
How ZIP+4 works in 73528
The four digits after the hyphen encode a delivery segment inside 73528. 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 73528 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 73528.
| ZIP | City | Distance |
|---|---|---|
| 73553 | Loveland, OK | 6 mi |
| 73540 | Faxon, OK | 6.8 mi |
| 73527 | Cache, OK | 11.7 mi |
| 73546 | Grandfield, OK | 13.3 mi |
| 73551 | Hollister, OK | 14.6 mi |
| 73505 | Lawton, OK | 14.8 mi |
| 73543 | Geronimo, OK | 15.5 mi |
| 73531 | Devol, OK | 16.3 mi |
| 73542 | Frederick, OK | 16.7 mi |
| 73552 | Indiahoma, OK | 16.7 mi |
| 73572 | Walters, OK | 18.3 mi |
| 73555 | Manitou, OK | 19.5 mi |
Questions about 73528
What is the ZIP+4 code for 73528?
73528 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 73528, you need to look up a specific street address to get them.
What city is 73528?
73528 is assigned to Chattanooga, Oklahoma, in Cotton 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.