2011 Language Mapper Tool
http://www.census.gov/hhes/socdemo/language/data/language_map.html

Where do people in the United States speak French? Or Chinese? Answers to both questions can be found on this well-designed site, provided by the U.S. Census Bureau. The data used comes from the 2007-2011 American Community Survey. (Users can view the complete report and accompanying tables here as well.) Visitors should definitely click on the About Language Use area to learn more about the methodology behind the questionnaire that determined linguistic distribution across the United States. Also, there’s a Historical Language Questions area that features selected questions dating back to 1890. It’s great to just click around the map to learn more about these patterns and, as a bonus, it’s quite easy to use. This will be added to the tools section of Research Resources Subject Tracer™ Information Blog. From The Scout Report, Copyright Internet Scout 1994-2013. https://www.scout.wisc.edu/