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Friend facts & stats

4 sourced facts about friendship, each with the context behind the number. 4 more are in today's round and appear here after it closes.

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The basics

By what age do most preschoolers already have at least one mutual friend?

Answer75% by preschool age

Friendship-making starts remarkably early, with three-quarters of preschoolers already having a mutual friend.

Source: Wikipedia, Friendship (2024) en.wikipedia.org

Going deeper

In that 2021 survey, what share of Americans had three or fewer close friends?

Answer49%

Close friend circles have shrunk over time; in 1990, only 27% had three or fewer close friends.

Source: Survey Center on American Life (2021) americansurveycenter.org

Expert level

Among young adults aged 18-29 in 2021, what share said friends were their first source of personal support?

Answer25%

Young adults lean on friends for support more than older Americans do, though family and partners still matter greatly.

Source: Survey Center on American Life (2021) americansurveycenter.org

Roughly how many hours of interaction does research suggest it takes to form a genuinely close friendship?

Answerover 100 hours

Casual friendships can form in 20 to 60 hours, but truly close friendships take much longer to build.

Source: Wikipedia, Friendship (2024) en.wikipedia.org

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