The number of Hispanics in the United States increased 43 percent between 2000 and 2010, a growth rate more than four times that of the overall population, the Census Bureau said Thursday.

Latinos made up 15.2 million of the 27.3 million new residents the United States gained over the decade.

Numbering 31.8 million, Mexicans are by far the biggest national group within the U.S. Hispanic population, accounting for 63 percent nationwide and constituting the majority of Latinos in 40 of the 50 states.

Next come the 4.6 million from Puerto Rico, who are U.S. citizens by birth, followed by the 1.8 million people of Cuban origin.

Three other Hispanic national groups reached or surpassed the 1 million mark between 2000 and 2010: Salvadorans, 1.6 million; Dominicans, 1.4 million; and Guatemalans, 1 million.

In 2000, more than half the U.S. Latino population was concentrated in California, Texas and Florida.

The 2010 Census found that 75 percent of Hispanics were distributed among those three states plus New York, Illinois, Arizona, New Jersey and Colorado.