45% of US Young Adults Live With Parents, Highest Level Since 1940s

Newly released US Census Bureau data shows that roughly 45% of adults aged 18-29 live in their parents' homes, the highest share since the 1940s when wartime draft and Depression-era economics pushed young adults back into multi-generational households.

Why it matters

The figure reflects how housing costs, wage growth, and student debt have stretched the traditional path to independence. Rent inflation, scarce entry-level housing supply, and elevated mortgage rates have pushed household formation off the historical timeline. The trend carries weight for retail, automotive, and consumer credit, all of which historically anchor to the 25-34 cohort that is now delaying or downgrading major purchases.

Market impact

For the broader economy, the shift shows up in weaker first-time-buyer demand, deferred auto loans, and slower household-formation-driven categories like furniture and appliances. For policymakers, it adds pressure on housing-supply initiatives and student-debt policy. For investors, the cohort is a lagging indicator: the consumer pull-through expected from this demographic has been deferred, not cancelled, and any reversal in housing affordability would unlock a backlog of pent-up demand.