The United States has a racially and ethnically diverse population. The United States Census officially recognizes six racial categories: White American, Black or African American, Native American and Alaska Native, Asian American, Native Hawaiian and Other Pacific Islander, and people of two or more races; a category called "some other race" is also used in the census and other surveys, but is not official. The United States Census Bureau also classifies Americans as "Hispanic or Latino" and "Not Hispanic or Latino", which identifies Hispanic and Latino Americans as an "ethnicity" (not a "race") distinct from others that composes the largest minority group in the nation. 

The United States Supreme Court unanimously held that "race" is not limited to Census designations on the "race question" but extends to all ethnicities, and thus can include Jewish and Arab as well as Polish or Italian or Irish, etc. In fact, the Census asks an "Ancestry Question" which covers the broader notion of ethnicity initially in the 2000 Census long form and now in the American Community Survey. 

, white Americans are the racial majority. African Americans are the largest racial minority, amounting to 13.3% of the population. Hispanic and Latino Americans amount to 17.8% of the total U.S. population, making up the largest ethnic minority. The White, non-Hispanic or Latino population make up 61.3% of the nation's total, with the total White population (including White Hispanics and Latinos) being 76.9%.
What question does the Census ask about ethnicity?
Who is the racial majority in America?
What is the biggest minority?
What amount of the population are they?
What is the Ancestry Question?
What is it?
What form was it originally on?
What is it on now?
How many racial categories are currently recognized by the Census?
Is there another category that is unofficial?
What is it?
What is the category for someone of 2 races?
Can Jewish count as a race?
What about Polish?
What did the Supreme Court decide?
What are Hispanic and Latino considered?
What percentage of the US population do they comprise?
Hispanic or Latino or not
The United States Census Bureau also classifies Americans as "Hispanic or Latino" and "Not Hispanic or Latino"
white Americans
white Americans are the racial majority
African Americans
African Americans are the largest racial minority
13.3%
African Americans are the largest racial minority, amounting to 13.3% of the population
it covers ethnicity
the Census asks an "Ancestry Question" which covers the broader notion of ethnicity initially in the 2000 Census long form and now in the American Community Survey.
unknown
unknown
Census long form
the Census asks an "Ancestry Question" which covers the broader notion of ethnicity initially in the 2000 Census long form 
the American Community Survey
 now in the American Community Survey
six
 The United States Census officially recognizes six racial categories
yes
 a category called "some other race" is also used in the census and other surveys, but is not official
some other race
 a category called "some other race" is also used in the census and other surveys, but is not official.
people of two or more races
and people of two or more races
no
 all ethnicities, and thus can include Jewish 
no
all ethnicities, and thus can include Jewish and Arab as well as Polish
race is not limited to Census designations
The United States Supreme Court unanimously held that "race" is not limited to Census designations
an ethnicity
as "Hispanic or Latino" and "Not Hispanic or Latino", which identifies Hispanic and Latino Americans as an "ethnicity
17.8%
Hispanic and Latino Americans amount to 17.8%