 In 2013, the percentage of women who gave birth in the previous 12 months who were unmarried was 56 percent.Of Philadelphia's adults, 31 percent were married or lived as a couple, 55 percent were not married, 11 percent were divorced or separated, and 3 percent were widowed.According to the U.S. Census Bureau, the median household income in 2013 was $36,836, down 7.9 percent from 2008 when the inflation-adjusted median household income was $40,008 (in 2013 dollars).