<p>The Malibu/Lost Hills Sheriff's Department is a branch of the Los Angeles Sheriff's Department and serves the communities of Agoura Hills, Calabasas, Chatsworth, Hidden Hills and Westlake Village. Unincorporated communities include Chatsworth Lake Manor, Malibou Lake, Topanga and West Hills.</p> <p>The station opened its doors in 1991 and employs approximately 160 sworn officers. The department is currently helmed by Capt. Joseph H. Stephen Jr., who is supported by six lieutenants.</p>