United States

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Location: United States
Topic: Percentage of births by maternal age
Format: Pie Graph
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Percentage of births by maternal age: United States, 2013-2015 Average

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• Of all live births in the United States during 2013-2015 (average), 6.4% were to women under the age of 20, 50.8% were to women ages 20-29, 39.8% were to women ages 30-39, and 3.0% were to women ages 40 and older. 
• Babies delivered to younger and older women are often at increased risk of poor birth outcomes, including prematurity, low birthweight and infant mortality. 


  • National Center for Health Statistics, final natality data.
  • Retrieved January 21, 2019, from www.marchofdimes.org/peristats.