ZIP Code 73078 — Piedmont, OK
73078 is a standard (street delivery) ZIP code serving Piedmont, Oklahoma, in Canadian 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 73078 at a glance
| ZIP code | 73078 |
|---|---|
| Primary city | Piedmont |
| State | Oklahoma (OK) |
| County | Canadian FIPS 40017 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 13,021 |
| Coordinates | 35.668670, -97.753040 |
How ZIP+4 works in 73078
The four digits after the hyphen encode a delivery segment inside 73078. 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 73078 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 73078.
| ZIP | City | Distance |
|---|---|---|
| 73142 | Oklahoma City, OK | 7.6 mi |
| 73162 | Oklahoma City, OK | 8.7 mi |
| 73012 | Edmond, OK | 9 mi |
| 73016 | Cashion, OK | 9.6 mi |
| 73099 | Yukon, OK | 9.9 mi |
| 73132 | Oklahoma City, OK | 10.3 mi |
| 73134 | Oklahoma City, OK | 10.9 mi |
| 73025 | Edmond, OK | 11 mi |
| 73120 | Oklahoma City, OK | 11.8 mi |
| 73008 | Bethany, OK | 12.3 mi |
| 73762 | Okarche, OK | 12.8 mi |
| 73122 | Oklahoma City, OK | 12.9 mi |
Questions about 73078
What is the ZIP+4 code for 73078?
73078 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 73078, you need to look up a specific street address to get them.
What city is 73078?
73078 is assigned to Piedmont, Oklahoma, in Canadian 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.