Thanks a lot for the correction rockzmom, I think that would be dismaying when your ethnic group being prevalent becomes a minority in a few decades ... I'm not quite sure what you mean upon the "old" way of thinking, of course they say that all peoples are equal but in reality it's easy to live with some side by side and with some can be tensions.
That Census data seems somewhat subjective ...Actually, the United States Census, (where the 72.4% number came from) requests that you list your race and break out Whites and Hispanics. Almost all demographic forms now have one question asking if you are white and a second question asking if you are of Latino or Hispanic descent. They also separate Asians, Native Americans, Native Alaskans, Native Hawaiians.
Take a look at the 2010 Census information scroll down about half way and there is an interact map with data by the entire US and by state and within the states by county.
Do you know that for the Census the people from the Middle East, Arabs, Persians, Pakistanis, Hindu are Caucasians and whites but not Asians?