ZIP Code 73538 — Elgin, OK
73538 is a standard (street delivery) ZIP code serving Elgin, Oklahoma, in Comanche 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 73538 at a glance
| ZIP code | 73538 |
|---|---|
| Primary city | Elgin |
| State | Oklahoma (OK) |
| County | Comanche FIPS 40031 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 7,128 |
| Coordinates | 34.740560, -98.307430 |
How ZIP+4 works in 73538
The four digits after the hyphen encode a delivery segment inside 73538. 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 73538 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 73538.
| ZIP | City | Distance |
|---|---|---|
| 73567 | Sterling, OK | 7.8 mi |
| 73541 | Fletcher, OK | 8 mi |
| 73557 | Medicine Park, OK | 11 mi |
| 73507 | Lawton, OK | 11 mi |
| 73503 | Fort Sill, OK | 11.7 mi |
| 73029 | Cyril, OK | 12.3 mi |
| 73501 | Lawton, OK | 12.4 mi |
| 73006 | Apache, OK | 12.7 mi |
| 73505 | Lawton, OK | 15.3 mi |
| 73017 | Cement, OK | 17.6 mi |
| 73543 | Geronimo, OK | 19.6 mi |
| 73527 | Cache, OK | 21.5 mi |
Questions about 73538
What is the ZIP+4 code for 73538?
73538 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 73538, you need to look up a specific street address to get them.
What city is 73538?
73538 is assigned to Elgin, Oklahoma, in Comanche 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.