Photo by Mr. T in DC Nearly half of the households in the District and Alexandria are made up of single people living alone, according to this story by the Washington Post. The findings are based on data released today from the U.S. Census Bureau’s 2006-2008 American Community Survey Data, which show that 26.7 percent of all households in the District are single females living alone, while 20.8 percent are single men living alone,…