Race (United States Census)
Race and ethnicity in the United States Census, as defined by the Federal Office of Management and Budget (OMB) and the United States Census Bureau
United States Census Bureau
The United States Census Bureau is the government agency that is responsible for the United States Census. It also gathers other national demographic and economic data...

, are self-identification
Self-concept is a multi-dimensional construct that refers to an individual's perception of "self" in relation to any number of characteristics, such as academics , gender roles and sexuality, racial identity, and many others. Each of these characteristics is a research domain Self-concept (also...

 data items in which residents choose the race
Race in the United States
The United States is a racially diverse country. Modern issues of "race", as well as its impact in the political and economic development of the nation, have been examined by numerous historians and researchers across a variety of academic disciplines....

 or races with which they most closely identify, and indicate whether or not they are of Hispanic or Latino origin (ethnicity).

The racial categories represent a social-political construct for the race or races that respondents consider themselves to be and "generally reflect a social definition of race recognized in this country." OMB defines the concept of race as outlined for the US Census as not "scientific or anthropological" and takes into account "social and cultural characteristics as well as ancestry", using "appropriate scientific methodologies" that are not "primarily biological or genetic in reference." The race categories include both racial and national-origin groups.

Race and ethnicity
Ethnic group
An ethnic group is a group of people whose members identify with each other, through a common heritage, often consisting of a common language, a common culture and/or an ideology that stresses common ancestry or endogamy...

 are considered separate and distinct identities, with Hispanic or Latino
Hispanic and Latino Americans
Hispanic or Latino Americans are Americans with origins in the Hispanic countries of Latin America or in Spain, and in general all persons in the United States who self-identify as Hispanic or Latino.1990 Census of Population and Housing: A self-designated classification for people whose origins...

 origin asked as a separate question.