CAPITAL OF U.S.A:WASHINGTON D.C

Washington, D.C.
Federal district
District of Columbia
Top left: Healy Hall at Georgetown University; top right: U.S. Capitol; middle: Washington Monument; bottom left: Frederick Douglass National Historic Site; bottom right: African American Civil War Memorial
Flag Seal
Nickname(s): Main article: Nicknames of Washington, D.C.
Motto: Justitia Omnibus  (English: Justice for All)
Location of Washington, D.C., in the contiguous United States and in relation to the U.S. states ofMaryland and Virginia.
Country	United States
Approved	July 16, 1790
Organized	1801
Consolidated	1871
Granted limited self-government	1973
Named for	George Washington
Government
• Mayor	Vincent C. Gray (D)
• D.C. Council	Phil Mendelson (D), Chairman
Area
• Federal district	68.3 sq mi(177.0 km2)
• Land	61.4 sq mi (159.0 km2)
• Water	6.9 sq mi (18.0 km2)
Elevation	0–409 ft (0–125 m)
Population (2012 estimate)[1][2]
• Federal district	632,323 (24th largest city in U.S.)
• Density	10,298/sq mi (3,977/km2)
• Metro	5,703,948 (7th largest in U.S.)
• Demonym	Washingtonian
Time zone	EST (UTC−5)
• Summer (DST)	EDT (UTC−4)
ZIP code(s)	20001-20098, 20201-20599
Area code(s)	202
Website	www.dc.gov

http://en.wikipedia.org/wiki/Washington,_D.C.