Supervisor Janice Hahn represents the 4th supervisorial district of Los Angeles County which is home to more than two million people. The district covers 411.05 square miles and stretches from Torrance and the Palos Verdes Peninsula through Long Beach and the Gateway Cities. The 4th supervisorial district includes portions of 32 cities, 18 unincorporated communities and four neighborhoods in the city of Los Angeles.Â