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What age is the new 20s? The Rise of Extended Adolescence

For the first time in over a century, more young adults in the United States are living with their parents than with a spouse or partner, a trend that reflects the evolving timeline of adulthood. This phenomenon has led many to question what age is the new 20s, as traditional milestones such as career stability, marriage, and homeownership are increasingly pushed into the late twenties and thirties.