ZIP Code 49031 — Cassopolis, MI
49031 is a standard (street delivery) ZIP code serving Cassopolis, Michigan, in Cass 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 49031 at a glance
| ZIP code | 49031 |
|---|---|
| Primary city | Cassopolis |
| State | Michigan (MI) |
| County | Cass FIPS 26027 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Detroit |
| Population | 7,869 |
| Coordinates | 41.898830, -85.988490 |
How ZIP+4 works in 49031
The four digits after the hyphen encode a delivery segment inside 49031. 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 49031 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 49031.
| ZIP | City | Distance |
|---|---|---|
| 49095 | Vandalia, MI | 5.5 mi |
| 49112 | Edwardsburg, MI | 7.3 mi |
| 49061 | Jones, MI | 8.5 mi |
| 49047 | Dowagiac, MI | 10 mi |
| 49130 | Union, MI | 10.5 mi |
| 46514 | Elkhart, IN | 12.1 mi |
| 49067 | Marcellus, MI | 13 mi |
| 46530 | Granger, IN | 13.1 mi |
| 49120 | Niles, MI | 13.3 mi |
| 49045 | Decatur, MI | 14.2 mi |
| 49102 | Berrien Center, MI | 14.4 mi |
| 46507 | Bristol, IN | 15.1 mi |
Questions about 49031
What is the ZIP+4 code for 49031?
49031 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 49031, you need to look up a specific street address to get them.
What city is 49031?
49031 is assigned to Cassopolis, Michigan, in Cass 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.