Leading industries: Professional services, retail, manufacturing.
Workforce: 513,000.
Unemployment: 5.8 percent (1999).
Per capita income: $12,091.
Politics: Mayor John Street is a Democrat in his first term. The city hasn't elected a Republican mayor since 1947.
Voter registration: Republicans -- 192,604 (19 percent). Democrats -- 738,103 (74 percent). Independent or members of smaller parties -- 607,030 (6 percent).
Nickname: City of Brotherly Love.
Taxes: Taxes in Philadelphia generate more than $2.4 billion. Residents pay a real estate tax, levied on the assessed value of property, an occupancy tax, a city wage tax and numerous sales taxes.
Economy: The regional economy benefits from its central Atlantic Coast location and transportation network. Chemicals, pharmaceuticals, medical services, publishing and banking flourish. With four medical schools, two dental schools, two pharmacy schools and numerous drug firms and research labs in the area, Philadelphia is a center of the health care industry.