Definitions for "Family household"
a household formed on the basis of kinship and marriage.
A family household is a household maintained by a family (as defined above), and may include among the household members any unrelated persons who may be residing there. The number of family households is equal to the number of families. The count of family household members differs from the count of family members, however, in that the family household members include all persons living in the household, whereas family members include only the householder and his/her relatives.
A household in which any relatives of the householder are present in the household.