District of Columbia
About District of Columbia
District of Columbia, District of Columbia, first appears in the United States federal census in 2000, when it recorded a population of 572,059. At the most recent census, in 2020, its population stood at 689,545.
The county's recorded population has risen across the decades to its highest level in 2020.
On the ground today, 17 documented military engagements have been recorded within the county, among them Susquehannock Fort Sieges (Maryland/Virginia), Maryland Susquehannock Frontier Raids 1676, Burning of Washington DC (Aug 24–25 1814), and 699 places are listed on the National Register of Historic Places.
Population by decade
Population data from the United States decennial census, U.S. Census Bureau (public domain).
Battles & engagements in District of Columbia
Military engagements that took place in District of Columbia, District of Columbia.
Historic places in District of Columbia
National Register of Historic Places listings in District of Columbia, District of Columbia.
Everything a full report reveals about District of Columbia County, District of Columbia
This page charts the census history of District of Columbia County, District of Columbia. A full Aubrey report for an address here pulls together everything the historical record holds about the ground, from the earliest settlement to the twentieth century:
Every location is different. Not every section appears for every place, only what the historical record actually holds turns up in a report.
Explore District of Columbia records
Frequently asked about District of Columbia
Research the history of any US location
Aubrey searches federal archives, archaeological records, historic registers, and primary sources to build a full historical report for any address or place in the United States.