Pennsylvania is officially known as the Commonwealth of Pennsylvania, and its capital is Harrisburg. Pennsylvania is nicknamed the “Keystone State” because of its central location among the original 13 states. It has a total area of 46,055 square miles. The U.S. Census Bureau lists Pennsylvania's population at 12,702,379, ranking it the sixth most populous state in the nation. The Census Bureau lists Pennsylvania as being 81.9 percent white, 10.8 percent black, 0.2 percent Indian and Alaska Native, and 5.7 percent Hispanic. The four most populous cities in the state are Philadelphia, Pittsburgh, Allentown, and Erie. The median household income is $49,501, with 12.5 percent living below the poverty line. According to Greyhill Advisors, Pennsylvania ranks sixth in the United States in gross state product. According ...

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