San Francisco 's population density is over 18,000 people per square mile and Chicago 's is under 10,000 people , in comparison the population density of Los Angeles ( over 9,000 ) is average .
Also , the population density of Los Angeles proper is low ( approximately 8,100 people per square mile ) when compared to some other large American cities such as New York ( 27,500 ) , San Francisco ( 17,000 ) , Boston ( 13,300 ) , and Chicago ( 11,800 ) .Haughton , Graham , and Colin Hunter , Sustainable Cities , London : Routledge , 2003 : 81 .
Greater Los Angeles