District of Columbia
Seal
Anthem: "Our Nation's Capital"
Coordinates: 38°54′17″N 77°00′59″W / 38.90472°N 77.01639°W / 38.90472; -77.01639 Coordinates : 38°54′17″N 77°00′59″W / 38.90472°N 77.01639°W / 38.90472; -77.01639 Country United States Residence Act 1790; 234 years ago (1790 ) Organized 1801; 223 years ago (1801 ) Consolidated 1871; 153 years ago (1871 ) Home Rule Act 1973; 51 years ago (1973 ) Named for George Washington , Christopher Columbus • Mayor Muriel Bowser (D ) • D.C. Council List
Phil Mendelson (D), Chairman
Anita Bonds (D), At‑large
David Grosso (
I ), At‑large
Robert White (D), At‑large
Elissa Silverman (I), At‑large
Brianne Nadeau (D), Ward 1
Vacant Ward 2
Mary Cheh (D),
Ward 3
Brandon Todd (D), Ward 4
Kenyan McDuffie (D), Ward 5
Charles Allen (D), Ward 6
Vincent C. Gray (D), Ward 7
Trayon White (D), Ward 8
• U.S. House Eleanor Holmes Norton (D),Delegate (At-large) • Federal capital city and federal district 68.34 sq mi (177.0 km2 ) • Land 61.05 sq mi (158.1 km2 ) • Water 7.29 sq mi (18.9 km2 ) Highest elevation
409 ft (125 m) Lowest elevation
0 ft (0 m) • Federal capital city and federal district 705,749 • Rank 20th, U.S. as of 2018[update] • Density 11,506/sq mi (4,442/km2 ) • Metro
6,216,589 (6th U.S. ) • CSA
9,665,892 (4th U.S. ) Time zone UTC−5 (EST ) • Summer (DST ) UTC−4 (EDT )ZIP Codes 20001–20098, 20201–20599
Major airports Commuter rail Rapid transit Abbreviations DC, D.C. Website dc.gov