根据美国疾病控制与预防中心（CDC）的一份报告，2025年美国总生育率下降了1%，达到新的历史最低点，延续了长达二十年的下滑趋势。20岁至24岁女性的生育率下降了6%，青少年女性的生育率下降了7%。相反，30岁至45岁女性的生育率则有小幅增长。
CDC Reports U.S. Fertility Rate Dropped to Record Low in 2025 as Motherhood Delays Rise According to a report from the Centers for Disease Control and Prevention (CDC), the U.S. general fertility rate fell 1% in 2025, reaching a new record low and continuing a two-decade decline. Birthrates dropped 6% among women aged 20 to 24 and 7% among late teens. Conversely, women aged 30 to 45 saw a modest increase in births.
包括亚特兰大联邦储备银行研究在内的人口统计学和经济学研究将这一代际转变归因于生活和育儿成本的上升、职业机会的扩大以及个人优先事项的改变。受此影响，2025年美国全国人口年龄中位数达到39.4岁，加速了区域性人口的减少。
Demographic and economic studies, including research from the Federal Reserve Bank of Atlanta, attribute this generational shift to rising living and childcare costs, expanded career opportunities, and shifting personal priorities. As a result, the national median age reached 39.4 in 2025, accelerating regional population declines.