ZIP Code 73770 — Southard, OK
73770 is a standard (street delivery) ZIP code serving Southard, Oklahoma, in Blaine 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 73770 at a glance
| ZIP code | 73770 |
|---|---|
| Primary city | Southard |
| State | Oklahoma (OK) |
| County | Blaine FIPS 40011 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 20 |
| Coordinates | 36.054060, -98.497910 |
How ZIP+4 works in 73770
The four digits after the hyphen encode a delivery segment inside 73770. 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 73770 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 73770.
| ZIP | City | Distance |
|---|---|---|
| 73755 | Longdale, OK | 7.7 mi |
| 73724 | Canton, OK | 9.8 mi |
| 73763 | Okeene, OK | 10.5 mi |
| 73744 | Hitchcock, OK | 13.4 mi |
| 73772 | Watonga, OK | 13.8 mi |
| 73658 | Oakwood, OK | 14.3 mi |
| 73747 | Isabella, OK | 15.2 mi |
| 73737 | Fairview, OK | 17.1 mi |
| 73646 | Fay, OK | 17.1 mi |
| 73718 | Ames, OK | 21.2 mi |
| 73764 | Omega, OK | 21.3 mi |
| 73756 | Loyal, OK | 22.1 mi |
Questions about 73770
What is the ZIP+4 code for 73770?
73770 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 73770, you need to look up a specific street address to get them.
What city is 73770?
73770 is assigned to Southard, Oklahoma, in Blaine 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.