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Birthweight and Gestation
Data are for the U.S.
- Number of babies born low birthweight (less than 2500 grams): 308,263
- Percent born low birthweight: 8.58%
- Percent born very low birthweight (less than 1500 grams): 1.36%
- Number of preterm births: 373,902
- Percent born preterm: 10.41%
Source: Births: Final Data for 2023, tables 13, 20, and 22 [PDF – 2 MB]
More data
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- Birth data
- Births in the United States, 2023
- Trends in Early-term Singleton Births in the United States, 2014 to 2023
- Shifts in the Distribution of Births by Gestational Age: United States, 2014–2022 [PDF – 403 KB]
- Maternal Characteristics and Infant Outcomes by Hispanic Subgroup and Nativity: United States, 2021
- Prepregnancy Body Mass Index and Infant Outcomes by Race and Hispanic Origin: United States, 2020 [PDF – 364 KB]
- Exploring the Decline in the Singleton Preterm Birth Rate in the United States, 2019-2020