ZIP Code 73440 — Lebanon, OK
73440 is a standard (street delivery) ZIP code serving Lebanon, Oklahoma, in Marshall 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 73440 at a glance
| ZIP code | 73440 |
|---|---|
| Primary city | Lebanon |
| State | Oklahoma (OK) |
| County | Marshall FIPS 40095 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 218 |
| Coordinates | 33.951630, -96.896350 |
How ZIP+4 works in 73440
The four digits after the hyphen encode a delivery segment inside 73440. 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 73440 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 73440.
| ZIP | City | Distance |
|---|---|---|
| 73439 | Kingston, OK | 8.6 mi |
| 76245 | Gordonville, TX | 8.8 mi |
| 73446 | Madill, OK | 11.7 mi |
| 73448 | Marietta, OK | 12 mi |
| 76273 | Whitesboro, TX | 14.3 mi |
| 75076 | Pottsboro, TX | 14.8 mi |
| 76264 | Sadler, TX | 14.9 mi |
| 73459 | Thackerville, OK | 18.6 mi |
| 73447 | Mannsville, OK | 19.1 mi |
| 74731 | Cartwright, OK | 19.2 mi |
| 73455 | Ravia, OK | 20.5 mi |
| 73449 | Mead, OK | 20.5 mi |
Questions about 73440
What is the ZIP+4 code for 73440?
73440 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 73440, you need to look up a specific street address to get them.
What city is 73440?
73440 is assigned to Lebanon, Oklahoma, in Marshall 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.