University of Illinois Urbana‑Champaign

Birth Rates and Characteristics

IECAM provides data and charts on women with births in the past 12 months – rate per 1,000 women aged 15–50.

Hover over a county to see its birth rate or change in birth rate for the selected year. Clicking on a county will show how birth rates or change in birth rates for that county have changed over time.

About the data

Women with births in the past 12 months – Rate per 1,000 women; Estimate; Women 15 to 50 years.

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates.

Note: Because of pandemic-related disruptions to data collection in 2020, the U.S. Census Bureau has alerted American Community Survey (ACS) data users to expect somewhat larger margins of error in the 2016-2020 5-year estimates than in previous 5-year releases.

Birth Characteristics

Birth characteristics are: Low Birth Weight (<2,500 grams); Very Low Birth Weight (<1,500 grams); Preterm (<37 weeks); Cesarean Section, Adequate Prenatal Care (Kotelchuck); Births to Unmarried Mothers; Births to Mothers Age 20+ Who Are Not High School Graduates (some characteristics are not available for some years) 

Birth characteristic data can be found on the Illinois Department of Public Health's More Detailed Birth Statistics page.