A Chinatown (Chinese: 唐人街/華埠/中國城, Cantonese jyutping: tong4 yan4 gaai1, Yale: tohng yahn gāai, Mandarin Pinyin: Tángrénjiē/Huá Bù/Zhōngguó Chéng ) is historically any ethnic enclave of Chinese or Han people outside China, Taiwan and Singapore. Areas known as "Chinatown" exist throughout the world, including the Americas, Europe, Africa, Australasia and Asia.(Wikipedia)
"San Francisco Chinatown"
"Chinatown San Francisco"