Average age of women giving birth increases over the last year, CDC says

September 11, 2013 by Karen Kaplan

The average age of women giving birth in America rose last year as the nation's birthrate held steady after several years of decline, the Centers for Disease Control and Prevention said.

The birthrate among teens and women in their early 20s hit historic lows in 2012, according to a new report released Friday by the CDC's National Center for Health Statistics. Meanwhile, the proportion of women in their 30s and early 40s who had babies rose. The birthrate for women in their late 40s held steady.

Americans have been to fewer babies every year since 2007, a trend that has been linked to the onset of the Great Recession. But now that decline seems to have stabilized.

With 99.96 percent of the country's vital statistics now tallied, the CDC said 3,952,937 babies were born in the United States in 2012. That's only 653 fewer than in 2011.

The teen birthrate reached an all-time low in 2012, with 29.4 births for every 1,000 young women ages 15 to 19. Just five years ago, the rate was 41.5 births per 1,000, and in 1991 it was as high as 61.8.

Women in their 20s gave to more babies than women in any other age group - a total of 2,040,878 babies in 2012. But the birthrate among these twentysomethings continued to fall. In fact, the 83.1 births per 1,000 women ages 20 to 24 represents a record low for the U.S.

But saw increases. The birthrate for women ages 30 to 34 rose 1 percent from 2011, to 97.3 babies per 1,000 women; the rate for women ages 35 to 39 rose 2 percent, to 48.3 births per 1,000 women; and the rate for women ages 40 to 44 rose 1 percent, to 10.4 births per 1,000 women.

Births among 15 to 44 either declined or held steady for nearly every racial and ethnic group tracked by the CDC. The one exception was among women of Asian and Pacific Islander descent; these women had 272,949 babies, a 7 percent increase from 2011.

Similarly, only four states - Idaho, Kansas, North Dakota and Ohio - registered increases in their birthrates in 2012.

The birthrate fell in 13 states: Alabama, Alaska, Colorado, Connecticut, Florida, Georgia, Illinois, Massachusetts, Mississippi, Nevada, New Hampshire, New Jersey and North Carolina. It held steady in the remaining 33 states and the District of Columbia.

New Hampshire had the lowest birthrate (50.2 babies per 1,000 women) and Utah had the highest (83.1 babies per 1,000 women).

The report also noted that American women as a whole aren't having enough babies to replace the current population (although the total population still rises as a result of immigration). To keep the population steady through births alone, there would need to be 2,100 births for every 1,000 American women over their lifetimes. But in 2012, the total fertility rate was only 1,880.5 births per 1,000 women.

Explore further: After years of decline, US births leveling off?

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