The average age of a U.S. mother at first birth…

The average age of a U.S. mother at first birth has risen consistently, and in 2012 reached 25.8 years old, up from 25.6 years in 2011 and about 21 in 1970. At the same time, about 12.5 percent of women ages 25 to 44 have sought medical help to become pregnant.