Cassopolis, Michigan
Cassopolis is a village in the U.S. state of Michigan and the county seat of Cass County. It is located mostly in LaGrange Township with a small portion extending east into Penn Township. The village and county are named after statesman Lewis Cass, a New Hampshire native and a prominent U.S. senator from Michigan prior to the American Civil War. Diamond Lake, one of the 100 largest inland lakes in Michigan, is located in Cassopolis. Cassopolis is... Show more part of the South Bend–Mishawaka, IN-MI, Metropolitan Statistical Area. The population was 1,774 at the 2010 cenCassopolis was platted by European Americans in 1831. It had already been designated the county seat by that point. It was incorporated as a village in 1863. The county developed farming and some industry. Cassopolis was a transit point on the Underground Railroad, by which sympathizers aided refugee slaves from the South to gain freedom...