Note: For information on data collection, confidentiality protection, nonsampling error, subject definitions, and guidance on using the data, visit the 2020 Census Demographic and Housing Characteristics File (DHC) Technical Documentation webpage.
To protect respondent confidentiality, data have undergone disclosure avoidance methods which add "statistical noise" - small, random additions or subtractions - to the data so that no one can reliably link the published data to a specific person or household. The Census Bureau encourages data users to aggregate small populations and geographies to improve accuracy and diminish implausible results.
A household that has at least one member of the household related to the householder by birth, marriage, or adoption is a "Family household." "Nonfamily households" consist of people living alone and households which do not have any members related to the householder.
Source: U.S. Census Bureau, 2020 Census Demographic and Housing Characteristics File (DHC)