ZIP Code 73838 — Chester, OK
73838 is a standard (street delivery) ZIP code serving Chester, Oklahoma, in Major 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 73838 at a glance
| ZIP code | 73838 |
|---|---|
| Primary city | Chester |
| State | Oklahoma (OK) |
| County | Major FIPS 40093 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 528 |
| Coordinates | 36.245750, -98.875790 |
How ZIP+4 works in 73838
The four digits after the hyphen encode a delivery segment inside 73838. 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 73838 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 73838.
| ZIP | City | Distance |
|---|---|---|
| 73663 | Seiling, OK | 9.7 mi |
| 73853 | Mutual, OK | 15.6 mi |
| 73737 | Fairview, OK | 16.5 mi |
| 73755 | Longdale, OK | 17.6 mi |
| 73724 | Canton, OK | 18.3 mi |
| 73667 | Taloga, OK | 18.7 mi |
| 73860 | Waynoka, OK | 20 mi |
| 73852 | Mooreland, OK | 21.1 mi |
| 73658 | Oakwood, OK | 22.4 mi |
| 73859 | Vici, OK | 23.8 mi |
| 73716 | Aline, OK | 24.4 mi |
| 73770 | Southard, OK | 24.8 mi |
Questions about 73838
What is the ZIP+4 code for 73838?
73838 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 73838, you need to look up a specific street address to get them.
What city is 73838?
73838 is assigned to Chester, Oklahoma, in Major 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.