Asians remain the fastest-growing minority racial group, with a 3% increase over last year’s population, to 18.2 million. But the fastest-growing ethnic group overall was Hispanics (who can be of any race), expanding by 3.1% since 2010.

The total minority population grew half a percentage point between 2010 and 2011 to 36.6%, or 114 million people. The census defines "minority" as anyone who does not identify themselves as white (as a single race) and non-Hispanic.

Native Hawaiians and Pacific Islanders had the highest percentage of children younger than 18 in 2011, at 33.9%. Hispanics were a close second, with 33.5% of the population under 18. In third were American Indians/Alaska natives, a group whose children make up 31.6% of its population. Next were blacks, with 29.6%; Asians, with 25.9%; and non-Hispanic whites, at 19.9%.

Across the United States, 23.7% of the total population is under 18.