Family size refers to the number of individuals living together in a household. This can include parents, children, and sometimes extended family members like grandparents or aunts and uncles. Family size can vary widely across different cultures and regions, influencing social dynamics and economic factors. In many societies, family size has changed over time due to various factors such as economic conditions, cultural norms, and access to education. Smaller families may be more common in urban areas, while larger families might be found in rural settings. Understanding family size helps in studying demographics and social trends.