I have been told that policy makers, the ones who keep making and passing the laws that have continuously criminalized immigrant communities, Latino communities, and all communities of color really, love statistics. They love numbers and charts (like Michele Bachmann’s following the SOTU?). It seems fitting then, that while anti-migrant bills get tossed around in both federal and state legislatures, the Pew Hispanic Center released a study that attempts to take a statistical snapshot of who the undocumented immigrants are in the U.S. and where they are.

As of March 2010, 11.2 million unauthorized immigrants were living in the United States, virtually unchanged from a year earlier, according to new estimates from the Pew Hispanic Center, a project of the Pew Research Center. This stability in 2010 follows a two-year decline from the peak of 12 million in 2007 to 11.1 million in 2009 that was the first significant reversal in a two-decade pattern of growth. Unauthorized immigrants were 3.7% of the nation’s population in 2010.

The number of unauthorized immigrants in the nation’s workforce, 8 million in March 2010, also did not differ from the Pew Hispanic Center estimate for 2009. As with the population total, the number of unauthorized immigrants in the labor force had decreased in 2009 from its peak of 8.4 million in 2007. They made up 5.2% of the labor force in 2010.

The number of children born to at least one unauthorized-immigrant parent in 2009 was 350,000 and they made up 8% of all U.S. births, essentially the same as a year earlier. An analysis of the year of entry of unauthorized immigrants who became parents in 2009 indicates that 61% arrived in the U.S. before 2004, 30% arrived from 2004 to 2007, and 9% arrived from 2008 to 2010.