Census data from 2016 shows that for the first time, American women in their 30s had more babies than women in their 20s. The peak demographic for childbirth is now 30-34. This might be the first time in human history that this has been true. Overall, 3.9 million babies were born in the US last year.
The birth rate for teenage girls in the US has fallen 51 percent since 2007; it is now 20.3 per 1,000 women aged 15 to 19.