Household size refers to the number of people living in a single housing unit. This can include family members, roommates, or other individuals sharing a home. Understanding household size is important for various reasons, such as planning for community services, housing needs, and resource allocation. Household size can vary widely based on factors like culture, economic conditions, and personal preferences. For example, a nuclear family typically consists of parents and their children, while a multigenerational household may include grandparents and other relatives. Changes in household size can impact social dynamics and local economies.