A study from the Pew Hispanic Center finds 45% of the Latino population in America is in 10 metropolitan areas.

While Los Angeles contains nearly 13% of the total U.S. population of Hispanics, they still only rank 4th in terms of population share for big cities. 45% of the population in Los Angeles is Hispanic, which is less than Riverside, CA (47%), San Antonio (55%) and Miami (66%).
Among the 60 metropolitan areas with the largest Latino populations, two have Latino population shares above 90%. The population of Laredo, Texas—with the 36th largest Latino population—is 96% Latino. The McAllen-Edinburg-Pharr-Mission, Texas, metropolitan area—which has the 13th largest Hispanic population—is 91% Latino.
Mexican-Americans are by far the nation's largest Hispanic origin group, comprising 65% of the total Hispanic population in the United States. They are also the largest Hispanic origin group in 50 of the 60 metropolitan areas covered by this report, and make up more than half of the Hispanic population in 46 of them. In 33 of these metro areas Mexicans are not only the largest Hispanic origin group, they are also bigger than any other racial or ethnic group.

