U.S. Births Dip To 30-Year Low; Fertility Rate Sinks Further Below Replacement Level In 2017, birth rates fell by 4 percent both for women from 20-24 years old and for women of ages 25-29, according to the Centers for Disease Control and Prevention. Seth Wenig, AP The birth rate fell for nearly every group of women of reproductive age in the U.S. in 2017, reflecting a sharp drop that saw the fewes