Change Indicator

Preterm births in Illinois

Preterm births

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Note: Non-consecutive years appear adjacent in the trend line
because one or more years have been deselected.

Why This Indicator Matters

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Definition and Source



"Preterm" refers to babies born with a gestational period of less than 37 completed weeks. Data represent two-year proportions.

Data Source

Illinois Department of Public Health, Birth Statistics, available here.


S: Data Suppressed. This indicates that standards of reliability were not met. In this case, IDPH suppresses estimates for which the numerator is less than 10.

Updated estimates for 2022-2023 are not yet available as of December 2023. They are anticipated in Fall 2024.

Last Updated

November 2022