U.S. Latino Population By State, County, and City (1980 - 2011)

The Pew Research Center’s Hispanic Trends Project (formerly known as the Pew Hispanic Center) produces reports, databases, and interactive maps showing the current status and historical development of the Latino population of the United States. This information is largely based on the American Community Survey, an ongoing statistical survey that is conducted every year by the U.S. Census Bureau and that provides essential information to elaborate public policies.

Here, for example, is an statistical profile of the Hispanic population in each of the 50 states and the District of Columbia, broken down to county level:

 

Read more at Pew Research Center’s Hispanic Trends Project