The population can also be viewed by the way individuals live together. The broadest unit is a “household,” which consists of all the people who occupy a housing unit. A house, an apartment or group of rooms, or a single room is regarded as a housing unit when occupied or intended for occupancy as independent living quarters.
The main subset is a “family household” which is a household maintained by a householder who is in a family (a group of two people or more related by birth, marriage, or adoption and residing together), and includes any unrelated people who may be residing there.
A “non-family household” consists of a householder living alone (a one-person household) or where the householder shares the home exclusively with people to whom he/she is not related.
The presence of children is tracked by various household and family types and can also reveal important trends in the changing fabric of a community.