According to the Federal Interagency Forum on Child and Family Statistics, in 2018 there were an estimated 73.3 million people in the US aged 0-17, representing 22.4% of the total population.
" In 2018, of all U.S. children: 50.0% were White, non-Hispanic; 25.9% were Hispanic; 13.3% were Black, non-Hispanic; 5.0% were Two or more races, non-Hispanic; 4.6% were Asian, non-Hispanic; 0.8% were American Indian or Alaska Native, non-Hispanic; 0.4% were some other race, non-Hispanic; and 0.2% were Native Hawaiian or Other Pacific Islander, non-Hispanic.
" In 2018, White, non-Hispanic children and American Indian or Alaska Native, non-Hispanic children accounted for a larger percentage of the population in nonmetropolitan (micropolitan and rural) areas than in metropolitan areas.
" In 2018, there were more Black, non-Hispanic children; Asian, non-Hispanic children; and Two or more race, non-Hispanic children in metropolitan areas than in micropolitan or rural areas. There were also more Hispanic children in metropolitan areas (27.3%) than in micropolitan areas (15.2%) or rural areas (10.9%).
" In 2018, no racial or Hispanic group accounted for more than 50% of children in metropolitan areas, whereas White, non-Hispanic children represented
at least two-thirds of children in both micropolitan and rural areas (68.4% and 72.4%, respectively)."
Federal Interagency Forum on Child and Family Statistics. (2020). America’s children in brief: Key national indicators of well-being, 2020. Washington, DC: U.S. Government Printing Office.