ZIP Code 49880 — Rock, MI
49880 is a standard (street delivery) ZIP code serving Rock, Michigan, in Marquette 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 49880 at a glance
| ZIP code | 49880 |
|---|---|
| Primary city | Rock |
| State | Michigan (MI) |
| County | Marquette FIPS 26103 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Detroit |
| Population | 1,021 |
| Coordinates | 46.116930, -87.225150 |
How ZIP+4 works in 49880
The four digits after the hyphen encode a delivery segment inside 49880. 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 49880 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 49880.
| ZIP | City | Distance |
|---|---|---|
| 49872 | Perkins, MI | 9.6 mi |
| 49818 | Cornell, MI | 11 mi |
| 49833 | Little Lake, MI | 11.4 mi |
| 49891 | Trenary, MI | 12.3 mi |
| 49885 | Skandia, MI | 15.9 mi |
| 49826 | Rumely, MI | 16.6 mi |
| 49841 | Gwinn, MI | 16.9 mi |
| 49837 | Gladstone, MI | 18 mi |
| 49816 | Chatham, MI | 19.1 mi |
| 49825 | Eben Junction, MI | 20.4 mi |
| 49878 | Rapid River, MI | 20.4 mi |
| 49873 | Perronville, MI | 21.7 mi |
Questions about 49880
What is the ZIP+4 code for 49880?
49880 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 49880, you need to look up a specific street address to get them.
What city is 49880?
49880 is assigned to Rock, Michigan, in Marquette 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.