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The ratio of number of residents in zip code 19904 to the number of sex offenders is 417 to 1. The number of registered sex offenders compared to the number of residents in this zip code is near the state average.
Zip code 19901 statistics: (Find on map). Estimated zip code population in 2011: 35,598. Zip code population in 2010: 35,055. Zip code population in 2000: 31,485. Mar. 2012 cost of living index in zip code 19901: 92.8 (less than average, U.S. average is 100). Land area: 79.9 sq. mi.