One-in-Five Speak Spanish at Home in Four States
http://www.census.gov/Press-Release/www/releases/archives/american_community_survey_acs/012634.html
Press release for 2008 release of American Community Survey data which reveals that 20% of residents in Arizona, California, New Mexico, and Texas spoke Spanish at home in 2007. The latest socio-economic data is for geographic areas with 65,000 or more people. From the Census Bureau.
