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Adult and Youth Population Trends

The adult population in Washington, DC (age 18 and older) started steadily increasing after 2000 while the child population (ages 17 and younger) started increasing after 2010. Between 2010 and 2019 (the latest data available by age group), the Census estimated that the adult population increased by almost 77,000 and the child population by more than 27,000.

Adult and Child Population in the District of Columbia, 1990-2019

 

 

Sources: US Census Bureau Decennial Census and 2019 Population Estimates

The 18 to 34 year old age group grew substantially between 2000 and 2010, after declining the prior decade. Between 2000 and 2010, this “millennial” group grew by more than 37,000 people and they are estimated to have grown by more than 25,000 between 2010 and 2019. The number of 35 to 64 year olds jumped substantially between 2010 and 2019, growing by nearly 33,000 people.

Adult Population by Age Groups in the District of Columbia, 1990-2019

Sources: US Census Bureau Decennial Census and 2019 Population Estimates

The estimated number of children under age 5 and those aged 5 to 13 increased by almost 13,000 and 16,000, respectively between 2010 and 2019. The number of 14 to 17 year olds have steadily decreased since 1990.

Child Population by Age Groups in the District of Columbia, 1990-2019

 Sources: US Census Bureau Decennial Census and 2019 Population Estimates

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