Since you mention 10,000,000 people, you are confusing Los Angeles County with the City of Los Angeles. There may be 5 County Supervisors, but the city has a m

Since you mention 10,000,000 people, you are confusing Los Angeles County with the City of Los Angeles. There may be 5 County Supervisors, but the city has a mayor and 15 council members. The other cities (Burbank, Santa Clarita, Glendale, Long Beach, etc.) also have their own mayors and city councils and whatnot.