One-in-five (20 percent) white women ages 40-44 was childless in 2008, the highest rate among racial and ethnic groups.
By comparison, 17 percent of black and Hispanic women were childless in 2008, and 16 percent of Asian women were childless.
Rates of childlessness rose more for nonwhites than whites from 1994 to 2008.
During those years, the childlessness rates for black women and for Hispanic women grew by more than 30 percent. The rate for white women increased only 11 percent.