Child Population (ages 0 to 5).
Data presented for 2010 through 2013 are Vintage 2013 population estimates. Each year the U.S. Census Bureau revises their post-2010 estimates. Therefore, data presented here may differ from previously published estimates. Figures for 2000 and 2010 represent revised population estimates for July 1, 2000 and July 1, 2010 - not actual Census counts from April 1, 2000 and April 1, 2010. Data presented for 2016 are from the Population Estimate Program and are not directly comparable to previous years.
Population Division, U.S. Census Bureau.
Estimated 2016 population by age group. Population Estimates Program. “Annual Estimates of the Resident Population for Selected Age Groups by Sex for the United States, States, Counties: 2016 Population Estimate.” https://factfinder.census.gov/faces/tableservices/jsf/pages/productview.xhtml?pid=PEP_2016_PEPAGESEX&prodType=table