| | | |  | Washington DC Population By County 2005 Estimate |
| | | Washington DC Counties | Estimated Growth Rate % | Estimated Population 2005 | Actual Census 2000 | | | District of Columbia | -3.59% | 550,521 | 571,044 | | | | | | | District of Columbia | -3.59% | 550,521 | 571,044 |
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U.S. Census Bureau, County Business Patterns 2003, Washington DC, Washington, DC,2005 |
| | | U.S. Population Projections By State |
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