Birthweight and Gestation

Data are for the U.S.

  • Number of babies born low birthweight (less than 2500 grams): 313,752
  • Percent born low birthweight: 8.28%
  • Percent born very low birthweight: 1.38%
  • Number of preterm births: 379,777
  • Percent born preterm: 10.02%

Source: Births: Final Data for 2018, tables 20, 21, 22 pdf icon[PDF – 985 KB]

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Page last reviewed: March 31, 2017