USA
> District of Columbia > District of Columbia
| County : | District of Columbia |
| State : | District of Columbia (DC) |
| Land Area : | 61.05 sq mi |
| Water Area : | 7.29 sq mi |
| Latitude : | 38.9041485 |
| Longitude : | -77.0170942 |
| Population (2010): | 601,723 |
| Population Estimate (2012) : | 605,759 |
| Population Density : | 9,856.54/sq mi |
| Housing Units (2012) : | 296,719 |
| Median Household Income (2012) : | $64,267 (District of Columbia : $64,267, USA : $53,046) |
| Median Family Income (2012) : | $78,993 (District of Columbia : $78,993, USA : $64,585) |
| Median House Price (2012) : | $443,000 (District of Columbia : $443,000, USA : $181,400) |
District of Columbia Cities / Towns
| Washington City (601,723) |
District of Columbia Zip Codes
| 20001 (38,551) | 20002 (52,370) | 20003 (26,454) |
| 20004 (1,622) | 20005 (12,775) | 20006 (3,227) |
| 20007 (26,866) | 20008 (27,525) | 20009 (47,992) |
| 20010 (30,138) | 20011 (58,536) | 20012 (13,414) |
| 20015 (15,332) | 20016 (32,519) | 20017 (17,735) |
| 20018 (16,894) | 20019 (54,358) | 20020 (49,864) |
| 20024 (11,510) | 20032 (35,653) | 20036 (5,435) |
| 20037 (14,642) | 20052 (470) | 20057 (3,888) |
| 20064 (1,890) | 20307 (353) | 20317 (903) |
| 20319 (84) | 20373 (131) | 20390 (584) |
| 20535 (8) |