20230620 12492100 1.0 TRUE Percent of population under age 18, 2020 {"definition": "Percent of county population under the age of 18", "availableYears": "April 1, 2020", "name": "Percent of population under age 18, 2020", "units": "Percent", "shortName": "Under18Pct2020", "geographicLevel": "County", "dataSources": "U.S. Census Bureau, 2020 Census of Population"} Under18Pct2020