The 2000 United States Census defines a household as one or more persons living in a housing unit. One person who owns or rents the residence is designated as the householder. For the purposes of examining family and household composition, two types of households are defined: family and non-family. A family household has at least two members related by blood, marriage, or adoption, one of whom is the householder. A non-family household can either be a person living alone or a householder who shares the housing unit with non-relatives only -- for example, boarders or roommates. The non-relatives of the householder may be related to one another.
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