Births have surpassed immigration as the main driver of the dynamic growth in the U.S. Hispanic population. This new trend is especially evident among the largest of all Hispanic groups-Mexican-Americans, according to a new analysis of U.S. Census Bureau data by the Pew Hispanic Center, a project of the Pew Research Center.
In the decade from 2000 to 2010, the Mexican-American population grew by 7.2 million as a result of births and 4.2 million as a result of new immigrant arrivals. This is a change from the previous two decades when the number of new immigrants either matched or exceeded the number of births.
Source: Pew Hispanic Center
Download pdf report: The Mexican-American Boom: Births Overtake Immigration
Link to online overview at Pew Hispanic Center