10. Philadelphia-Camden-Wilmington, PA-NJ-DE-MD
Per Capita Personal Income: $ 57,173
U.S. Rank: 21
GDP: $411,161 millions
U.S. Rank: 8
The top ten of our America’s 25 richest cities begins with the only World Heritage City in the United States. Philadelphia’s metropolitan area is the 7th largest in the United States with a population of 6 million while the city itself has 1.5 million residents. Oil refining, information technologies, and financial services are among the largest contributors to the Philadelphia’s economy.