The birth rate is defined as the number of live births per 1,000 women of childbearing age (15-44 years). Sustained low birth rates may indicate that the population is aging, and sustained high birth rates may predict a much younger age structure in the population. It can be helpful to understand how the birth rate changes for different maternal age groups and for different racial and ethnic backgrounds, and how these births are distributed in a population.
| ||In 2013, there were 3,932,181 live births in the United States.|
| ||The birth rate in the United States in 2013 was 62.5 per 1,000 women ages 15-44.|
| ||Of all live births in the United States during 2011-2013 (average), 23.0% were Hispanic, 54.1% were white, 14.8% were black, 1.0% were Native American and 6.3% were Asian.|
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National Center for Health Statistics, final natality data.
US Census Bureau. Population estimates based on bridged race categories released by the National Center for Health Statistics.
Retrieved October 13, 2015, from www.marchofdimes.org/peristats.