If she is eventually deported, "it wouldn't be that tragic," Marcelino said. "But because the children have been born here, this is their country. And there are more opportunities for them here."
Of the 30 large metropolitan areas showing the fastest Hispanic growth in the previous decade, all showed slower growth in 2011 than in the peak Hispanic growth years of 2005-2006, when the construction boom attracted new migrants to low-wage work. They include Lakeland, Fla.; Charlotte, N.C.; Atlanta; Provo, Utah; Las Vegas; and Phoenix. All but two – Fort Myers, Fla., and Dallas-Fort Worth – also grew more slowly last year than in 2010, hurt by the jobs slump.
Pointing to a longer-term decline in immigration, demographers believe the Hispanic population boom may have peaked.
"The Latino population is very young, which means they will continue to have a lot of births relative to the general population," said Mark Mather, associate vice president of the Population Reference Bureau. "But we're seeing a slowdown that is likely the result of multiple factors: declining Latina birth rates combined with lower immigration levels. If both of these trends continue, they will lead to big changes down the road."