Moniteau County is a county located in the U.S. state of Missouri. As of the 2020 United States census, the population was 15,473. Its county seat is California. The county was organized February 14, 1845, and named for the Moniteau Creek. 'Moniteau' is a French spelling of Manitou, Algonquian for the Great Spirit.

The Missouri House of Representatives is the lower chamber of the Missouri General Assembly. It has 163 members, representing districts with an average size of 37,000 residents. House members are elected for two-year terms during general elections held in even-numbered years.