The 70th district, located partly in the Chicagoland area, includes Belvidere, Big Rock, Burlington, Campton Hills, Cortland, DeKalb, Elgin, Garden Prairie, Genoa, Hampshire, Hinckley, Kaneville, Kingston, Kirkland, Lily Lake, Malta, Maple Park, Poplar Grove, Sugar Grove, Sycamore, and Virgil.