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.

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) 

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.