Linnea Zimmerman

Associate professor, Johns Hopkins Bloomberg School of Public Health

Appears in 1 story

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U.S. birth rate hits record low as motherhood shifts to women over 30

Studies fertility measurement methods

The U.S. fertility rate fell to a record low in 2025, capping two decades of decline that has cut births by nearly a quarter since 2007. The drop would have been larger if not for one counter-trend: women over 30 are having more babies than earlier generations of American women.

Updated 3 hours ago