United States - Languages spoken at home by more than 1 million persons in the U.S. (2010)

Reference 1: Percent of population, Number of speakers and Number who speak English well or very well.

Reference 2: English (only), Combined total of all languages other than English, Spanish (excluding Puerto Rico and Spanish Creole), Chinese (including Cantonese and Mandarin), Tagalog, Vietnamese, French (including Cajun but not Haitian Creole), Korean and German.

Source: http://en.wikipedia.org/wiki/United_States