This statistic depicts the first birth rates for women in the United States aged between 35 and 44 years, by selected age group of the mother, from 1970 and 2012. In 2005, women between 35 and 39 years of age had a first birth rate of 10.7 per 1,000 women, among women between 40 and 44 years old, the rate was 2.0 births per 1,000 women. The average age of women who have their first births has been rising over the past years. Having children at later ages will impact the size, composition, and growth of the country's population.
* Link with all values can be found here.