ZIP Code 74643 — Lamont, OK
74643 is a standard (street delivery) ZIP code serving Lamont, Oklahoma, in Grant 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 74643 at a glance
| ZIP code | 74643 |
|---|---|
| Primary city | Lamont |
| State | Oklahoma (OK) |
| County | Grant FIPS 40053 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 512 |
| Coordinates | 36.684570, -97.553790 |
How ZIP+4 works in 74643
The four digits after the hyphen encode a delivery segment inside 74643. 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 74643 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 74643.
| ZIP | City | Distance |
|---|---|---|
| 74636 | Deer Creek, OK | 9.7 mi |
| 74640 | Hunter, OK | 9.8 mi |
| 74646 | Nardin, OK | 11.6 mi |
| 74653 | Tonkawa, OK | 11.9 mi |
| 74630 | Billings, OK | 14.6 mi |
| 73759 | Medford, OK | 14.9 mi |
| 74631 | Blackwell, OK | 15.8 mi |
| 73766 | Pond Creek, OK | 15.9 mi |
| 73738 | Garber, OK | 16.6 mi |
| 73753 | Kremlin, OK | 19.7 mi |
| 74632 | Braman, OK | 21.2 mi |
| 73701 | Enid, OK | 22.2 mi |
Questions about 74643
What is the ZIP+4 code for 74643?
74643 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 74643, you need to look up a specific street address to get them.
What city is 74643?
74643 is assigned to Lamont, Oklahoma, in Grant 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.