Cassopolis, MI

ZIP code 49031 covers Cassopolis and nearby rural areas in Cass County, southwestern Michigan. Notable landmarks include the Cass County Courthouse and the Cass County Historical Museum in the village’s historic center. Stone Lake, within Cassopolis, is a prominent recreational feature, while nearby Diamond Lake is another major local destination for boating, fishing, and swimming. The surrounding area is characterized by small-town neighborhoods, farmland, and lakes.