"The ACS codes 381 distinct non-English languages, and 169 of these are Native North American languages. Although Native North American languages make up most of the languages coded, the
speakers of these languages number less than half a million. The size of the Native North American language speaking population is dwarfed by the 60 million people speaking a different non-English language and the 227 million people who speak English only." (thanks Tiffany)