Founded in 1829, Cass County is one of 83 counties in the state of Michigan. Historically, Cass County was formed from unorganized territory. The city of Cassopolis is the county seat. With FIPS code of 27, Cass County has a population of 51,483 and area of 508 square miles (1,316 km2).
List of all cities in Cass County, MI alphabetically
| City/Town | Postal Code | Area Code |
| Cassopolis, MI | 49031 | 269 |
| Dowagiac, MI | 49047 | 269 |
| Edwardsburg, MI | 49112 | 269 |
| 49130 | 269 | |
| Jones, MI | 49061 | 269 |
| Marcellus, MI | 49067 | 269 |
| Union, MI | 49130 | 269 |
| Vandalia, MI | 49095 | 269 |