household; family unit
Refers to a residential and economic unit, often used in official contexts such as census, taxes, and utilities. More formal than 家族, which emphasizes blood relations.
このアパートには十世帯が住んでいる。
Ten households live in this apartment building.
世帯主の名前を記入してください。
Please fill in the name of the head of the household.
He has already moved out and set up his own household.
After our father died, my older brother became the head of the household.
The number of single-person households is increasing every year.
multiple households
large household; big family