What is "jefferson hills"

Population (2000): 9666
Housing Units (2000): 3954
Land area (2000): 16.566069 sq. miles (42.905919 sq. km)
Water area (2000): 0.041910 sq. miles (0.108547 sq. km)
Total area (2000): 16.607979 sq. miles (43.014466 sq. km)
FIPS code: 37955
Located within: Pennsylvania (PA), FIPS 42
Location: 40.285502 N, 79.933160 W
ZIP Codes (1990):
Note: some ZIP codes may be omitted esp. for suburbs.
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