District of Columbia

Population
	2000	2007
Population	572,059	588,292
State Rank	NA	50
Median Age	34.6	34.9
Total 8 year-olds	7,176	5,074
Boys	3,627	2,437
Girls	3,549	2,637
Total 9 year-olds	7,171	5,520
Boys	3,573	2,935
Girls	3,598	2,585
Total 10 year-olds	6,983	5,308
Boys	3,548	2,681
Girls	3,435	2,627
Total 11 year-olds	6,116	5,783
Boys	3,088	2,953
Girls	3,028	2,830
Total 12 year-olds	5,759	5,706
Boys	2,860	2,845
Girls	2,899	2,861

How People Get to Work:
Drive Alone	38%	38%
Car Pool	11%	7%
Public Transportation	33%	36%

Geography
Largest City	Washington
Persons per square mile	9,316

Business
	2000	2006
Dentist Offices	320	319
Amusement Parks	1	0
FastFood Restaurants	602	896
Toy Stores	15	4
Video/Disc Rental Stores	28	18
Zoos & Botanical Gardens	1	0
Candy & Nut Stores	17	5
Pet & Pet Supply Stores	8	9
Ice Cream & Frozen Dessert Makers	0	0

Note: As is the case with all surveys, statistics from sample surveys are subject to sampling and nonsampling error.

A value of NA indicates that data are not available for the indicated time period, or is not applicable for the current region.

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History

Population 1800: 8,144
Population 1850: 51,687
Population 1900: 278,718
Population 1950: 802,178

I never knew that! *

Flower: American Beauty Rose
Tree: Scarlet Oak
Bird: Wood Thrush

Teachers: Download the Picture Your State lesson plan. [pdf]

Who told you this stuff?

The U.S. Census Bureau takes a census of the population every 10 years, and censuses of economic activity and governments every five years. And every year, the Census Bureau conducts more than 100 other surveys. Data on this page come from Population Estimates, the Census of Population and Housing, the American Community Survey, and County Business Patterns.

How are these data collected?

The U.S. Census Bureau sends questionnaires in the mail or contacts businesses and households to participate in its surveys.

* State symbol information was obtained from various non-Census Bureau resources including state web sites, educational web sites, and commercial entities.