ZIP Code 49078 — Otsego, MI
49078 is a standard (street delivery) ZIP code serving Otsego, Michigan, in Allegan 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 49078 at a glance
| ZIP code | 49078 |
|---|---|
| Primary city | Otsego |
| State | Michigan (MI) |
| County | Allegan FIPS 26005 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Detroit |
| Population | 10,018 |
| Coordinates | 42.465850, -85.728460 |
How ZIP+4 works in 49078
The four digits after the hyphen encode a delivery segment inside 49078. 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 49078 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 49078.
| ZIP | City | Distance |
|---|---|---|
| 49070 | Martin, MI | 7.2 mi |
| 49080 | Plainwell, MI | 7.7 mi |
| 49010 | Allegan, MI | 8.7 mi |
| 49055 | Gobles, MI | 9.2 mi |
| 49009 | Kalamazoo, MI | 11 mi |
| 49344 | Shelbyville, MI | 11.2 mi |
| 49328 | Hopkins, MI | 11.4 mi |
| 49004 | Kalamazoo, MI | 11.8 mi |
| 49006 | Kalamazoo, MI | 12.8 mi |
| 49007 | Kalamazoo, MI | 13.3 mi |
| 49026 | Bloomingdale, MI | 13.4 mi |
| 49074 | Nazareth, MI | 13.9 mi |
Questions about 49078
What is the ZIP+4 code for 49078?
49078 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 49078, you need to look up a specific street address to get them.
What city is 49078?
49078 is assigned to Otsego, Michigan, in Allegan 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.