ZIP Code 74856 — Mill Creek, OK
74856 is a standard (street delivery) ZIP code serving Mill Creek, Oklahoma, in Johnston 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 74856 at a glance
| ZIP code | 74856 |
|---|---|
| Primary city | Mill Creek |
| State | Oklahoma (OK) |
| County | Johnston FIPS 40069 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 842 |
| Coordinates | 34.398530, -96.818290 |
How ZIP+4 works in 74856
The four digits after the hyphen encode a delivery segment inside 74856. 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 74856 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 74856.
| ZIP | City | Distance |
|---|---|---|
| 73086 | Sulphur, OK | 10.8 mi |
| 74836 | Connerville, OK | 11.4 mi |
| 73460 | Tishomingo, OK | 11.5 mi |
| 73447 | Mannsville, OK | 12.1 mi |
| 73455 | Ravia, OK | 12.3 mi |
| 73032 | Dougherty, OK | 13.3 mi |
| 74865 | Roff, OK | 14.3 mi |
| 73436 | Gene Autry, OK | 14.8 mi |
| 74530 | Bromide, OK | 17.4 mi |
| 73450 | Milburn, OK | 18.4 mi |
| 74843 | Fitzhugh, OK | 18.9 mi |
| 74842 | Fittstown, OK | 19 mi |
Questions about 74856
What is the ZIP+4 code for 74856?
74856 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 74856, you need to look up a specific street address to get them.
What city is 74856?
74856 is assigned to Mill Creek, Oklahoma, in Johnston 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.