In the 1850 census, the population of Los Angeles was 1,610. Oil was discovered in Los Angeles in 1891. By 1923, the area produced one-quarter of the world's oil and by 2000, the population had grown to 3,694,820.
Los Angeles is home to people from more than 140 countries speaking 224 different languages.
According to the American Lung Association, Los Angeles is the most polluted city in the US. The Chumash Indians called the region by a name that translates as 'valley of smoke'.
The original name of Los Angeles in 1781 was 'El Pueblo de Nuestra Señora Reina de los Ángeles sobre el Río Porciúncula" ('The Town of Our Lady Queen of the Angels on the Porciuncula River').
Public nudity, including naked sunbathing in a public park, is illegal in Los Angeles.