Chinatown is a neighborhood on the South Side of Chicago, along S. Wentworth Avenue between Cermak Road and W. 26th St. Over a third of Chicago's Chinese population resides in this ethnic enclave, making it one of the largest concentrations of Chinese-Americans in the United States. It formed around 1912, after settlers moved south from near the Loop, where the first enclaves were established in the 19th century.