Cass County Missouri
The Cass County Courthouse is located at 102 East Wall Street, Harrisonville, MO 64701; phone: 816-380-8227.
Cass County was organized March 3, 1835, from Jackson County and named for Lewis Cass, Michigan senator and presidential candidate. Originally organized as Van Buren County in honor of Martin Van Buren, the Democratic legislature changed the name to Cass on February 19, 1849, to honor Van Buren's Democratic opponent Lewis Cass. Van Buren ran as the Free-Soil candidate for president in 1848.