As of April 1, 2020, the Washington region was home to 6,371,325 residents, an increase of 735,093 people and 13.0 percent from April 1, 2010. These totals are the result of the once-a-decade full population count produced by the Decennial Census and are the most complete source of information on population in the region and the U.S. The U.S. Census Bureau released population counts by race and ethnicity for all geographies in the U.S. on August 12, 2021 and more details, including population by age, will be released in the upcoming year.

The 2020 Decennial Census: Population Change in the Washington Region
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Between 2010 and 2020, the number of residents increased

  • 13.0% in the region,
  • 14.6% in the District of Columbia,
  • 14.4% in Northern Virginia, and
  • 11.1% in Suburban Maryland.

The region’s population continued to become more racially and ethnically diverse during the 2010-2020 period and including gains of

  • 101.2% for people that identified as more than one race or a race other than white, Black, Asian or Pacific Islander,+41.2% for Hispanic or Latino people,
  • 34.9% for Asian or Pacific Islander and not Hispanic people ,
  • 8.3% for Black and not Hispanic people, while
  • the number of white and not Hispanic people decreased by 2.2 percent.