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The 2009 District of Columbia County, DC, population is 588,292. There are 9,457 people per square mile (population density).
The median age is 36.6. The US median is 37.6. 34.23% of people in District of Columbia County, DC, are married. 9.78% are divorced.
The average household size is 2.1 people. 8.25% of people are married, with children. 11.39% have children, but are single.
31.61% of people are white, 56.80% are black, 3.23% are asian, 0.30% are native american, and 7.62% claim 'Other'.
10.14% of the people in District of Columbia County, DC, claim hispanic ethnicity (meaning 89.86% are non-hispanic).
District_of_Columbia, DC People data
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