The average American family in 2025 consisted of 3.15 persons. This figure has largely stayed consistent since the early 2000's.
What is a family?
The social and cultural definition of a family is widely diverse. According to the U.S. Census Bureau, a family household is a group of two people or more related by birth, marriage, or adoption who live together. All these people are considered members of a single family unit.
Families in the United States
As of 2025, the U.S. Census Bureau counted over 85 million families in the United States. The average family size consisted of 3.15 persons as of late, down from 3.7 in the 1960s. This is reflected in the decrease of children in family households overall.
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U.S. Census Bureau. (December 2, 2025). Average number of people per family household in the United States from 1960 to 2025 [Graph]. In ÌÇÐÄÆÆ½â°æ. Retrieved August 01, 2026, from /statistics/183657/average-size-of-a-family-in-the-us/
U.S. Census Bureau. "Average number of people per family household in the United States from 1960 to 2025." Chart. December 2, 2025. ÌÇÐÄÆÆ½â°æ. Accessed August 01, 2026. /statistics/183657/average-size-of-a-family-in-the-us/
U.S. Census Bureau. (2025). Average number of people per family household in the United States from 1960 to 2025. ÌÇÐÄÆÆ½â°æ. ÌÇÐÄÆÆ½â°æ Inc.. Accessed: August 01, 2026. /statistics/183657/average-size-of-a-family-in-the-us/
U.S. Census Bureau. "Average Number of People per Family Household in The United States from 1960 to 2025." ÌÇÐÄÆÆ½â°æ, ÌÇÐÄÆÆ½â°æ Inc., 2 Dec 2025, /statistics/183657/average-size-of-a-family-in-the-us/
U.S. Census Bureau, Average number of people per family household in the United States from 1960 to 2025 ÌÇÐÄÆÆ½â°æ, /statistics/183657/average-size-of-a-family-in-the-us/ (last visited August 01, 2026)
Average number of people per family household in the United States from 1960 to 2025 [Graph], U.S. Census Bureau, December 2, 2025. [Online]. Available: /statistics/183657/average-size-of-a-family-in-the-us/