ZIP Code 48878 — Rosebush, MI
48878 is a standard (street delivery) ZIP code serving Rosebush, Michigan, in Isabella 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 48878 at a glance
| ZIP code | 48878 |
|---|---|
| Primary city | Rosebush |
| State | Michigan (MI) |
| County | Isabella FIPS 26073 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Detroit |
| Population | 1,240 |
| Coordinates | 43.712250, -84.776860 |
How ZIP+4 works in 48878
The four digits after the hyphen encode a delivery segment inside 48878. 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 48878 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 48878.
| ZIP | City | Distance |
|---|---|---|
| 48858 | Mount Pleasant, MI | 6.8 mi |
| 48859 | Mount Pleasant, MI | 8.7 mi |
| 48617 | Clare, MI | 9.8 mi |
| 48622 | Farwell, MI | 9.9 mi |
| 48893 | Weidman, MI | 10.2 mi |
| 48618 | Coleman, MI | 11 mi |
| 48883 | Shepherd, MI | 12.9 mi |
| 48896 | Winn, MI | 14.6 mi |
| 48632 | Lake, MI | 15.6 mi |
| 48657 | Sanford, MI | 17.7 mi |
| 49340 | Remus, MI | 17.8 mi |
| 48633 | Lake George, MI | 18.1 mi |
Questions about 48878
What is the ZIP+4 code for 48878?
48878 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 48878, you need to look up a specific street address to get them.
What city is 48878?
48878 is assigned to Rosebush, Michigan, in Isabella 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.