What is the average age a woman in US gives birth to her first child?

The average age of a woman in the United States who gives birth to her first child is 26.3 years old. This number has been increasing steadily over the past few decades, as more and more women are choosing to delay childbearing until they are older. There are a number of reasons why women are waiting longer to have children, including the rising cost of child care, the desire to establish a career, and the increasing availability of effective contraception.