This map shows the percentage of children ages 5 years and under of the total population of each county in Illinois, based on 2017 demographic data.

Source of data: IECAM demographers prepared estimates of population based on Census Bureau estimates for the following programs or surveys: Population Estimates Program American Community Survey, 5-year estimates.

This map shows the percentage of population in Illinois under one year of age, by county. Percentages are based on estimates of population based on Census Bureau estimates.