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Philadelphia is a large city in the U.S. state of Pennsylvania. It is the biggest city in Pennsylvania, and the fifth biggest city in the United States of America. In spoken English, the city is sometimes called Philly.
The population of the city was 1,517,550 people in 2000, in 2010 census it was up to 1,526.006 people. Philadelphia was the capital of the United States from 1790 to 1800. It was replaced by Washington, D.C. in 1800 after the White House was built. view more...