ZIP Code 73743 — Hillsdale, OK
73743 is a standard (street delivery) ZIP code serving Hillsdale, Oklahoma, in Garfield 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 73743 at a glance
| ZIP code | 73743 |
|---|---|
| Primary city | Hillsdale |
| State | Oklahoma (OK) |
| County | Garfield FIPS 40047 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 89 |
| Coordinates | 36.563240, -97.992700 |
How ZIP+4 works in 73743
The four digits after the hyphen encode a delivery segment inside 73743. 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 73743 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 73743.
| ZIP | City | Distance |
|---|---|---|
| 73727 | Carrier, OK | 6.1 mi |
| 73753 | Kremlin, OK | 6.9 mi |
| 73739 | Goltry, OK | 8.5 mi |
| 73703 | Enid, OK | 8.6 mi |
| 73761 | Nash, OK | 8.7 mi |
| 73766 | Pond Creek, OK | 10.4 mi |
| 73754 | Lahoma, OK | 13.2 mi |
| 73749 | Jet, OK | 13.6 mi |
| 73701 | Enid, OK | 14.9 mi |
| 73741 | Helena, OK | 15.2 mi |
| 73760 | Meno, OK | 15.6 mi |
| 73705 | Enid, OK | 16.3 mi |
Questions about 73743
What is the ZIP+4 code for 73743?
73743 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 73743, you need to look up a specific street address to get them.
What city is 73743?
73743 is assigned to Hillsdale, Oklahoma, in Garfield 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.