Source and Methodology

We have defined limited English proficient (LEP) individuals as the population 5 years or older who self-identify as speaking English less than “very well” according to the U.S. Census 2008-2012 American Community Survey 5-Year Estimate data.  Total LEP population equals the sum of all individuals who speak a language other than English and speak English less than “very well.”  We have calculated the share of LEP individuals by tabulating LEP populations as a percentage of the total population of the statistical area.  For more information on the underlying data, including margins of error, see  U.S. Census Bureau - ACS 2012 Table: B16001 5-Year Estimate Language Spoken At Home By Ability To Speak English For The Population 5 Years And Over.

Click here for more information about how the Census and the American Community Survey collects data on language use and English-speaking ability, including the creation of language groups and categories.  We also welcome feedback on our inaugural LEP mapping tool.