Factwalk: Washington DChttp://www.factwalk.com/washington_dcFacts, information and statistics on Washington DC.Washington DC Incomes Soar as Most of U.S. Declineshttp://www.factwalk.com/1255American incomes have tumbled over the last decade. But for many people in Washington, D.C., itís been something of a party. The income of the typical D.C. household rose 23.3% between 2000 and 20122013-09-21 04:29:03