The 2010 Census counted 50.5 million Hispanics in the United States, making up 16.3% of the total population. The nation's Latino population, which was 35.3 million in 2000, grew 43% over the decade.

The number of Hispanics counted in the 2010 Census was nearly 1 million more than expected, based on the most recent Census Bureau population estimates.

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.

The annual inflow of unauthorized immigrants to the U.S. was nearly two-thirds smaller in the March 2007 to March 2009 period than it had been from March 2000 to March 2005.

An estimated 340,000 of the 4.3 million babies born in the United States in 2008 were the offspring of unauthorized immigrants, according to a new analysis of Census Bureau data.

The flow of immigrants from Mexico to the United States has declined sharply since mid-decade, but there is no evidence of an increase during this period in the number of Mexican-born migrants returning home from the U.S.

The question of who's Hispanic -- and who isn't -- turns out to be pretty complicated.

The nation's 11.9 million unauthorized immigrants are more geographically dispersed than in the past, according to a new demographic and geographic analysis of this group that includes population and labor force estimates for each state.

There were 11.9 million unauthorized immigrants living in the United States in March 2008. The size of the unauthorized population appears to have declined since 2007.

If current trends continue, immigrants arriving from 2005 to 2050 and their descendants will account for 82% of the population growth in the United States during this period, according to new projections from the Pew Research Center.