The U.S. Office of Management and Budget (OMB) requires federal agencies to use a minimum of two ethnicities in collecting and reporting data: Hispanic or Latino and Not Hispanic or Latino. OMB defines "Hispanic or Latino" as a person of Cuban, Mexican, Puerto Rican, South or Central American, or other Spanish culture or origin regardless of race.
People who identify with the terms “Hispanic” or “Latino” are those who classify themselves in one of the specific Hispanic or Latino categories listed on the decennial census questionnaire and various Census Bureau survey questionnaires – “Mexican, Mexican Am., Chicano” or ”Puerto Rican” or “Cuban” – as well as those who indicate that they are “another Hispanic, Latino, or Spanish origin.”
The 2010 Census question on Hispanic origin included five separate response categories and one area where respondents could write in a specific Hispanic origin group. The first response category was intended for respondents who do not identify as Hispanic. The remaining response categories (“Mexican, Mexican Am., Chicano”; “Puerto Rican”; “Cuban”; and “another Hispanic, Latino, or Spanish origin”) and write-in answers can be combined to create the OMB category of Hispanic.
Source: United States Census Bureau