What is "carolina zona"

Population (2000): 168164
Housing Units (2000): 65256
Land area (2000): 20.645142 sq. miles (53.470669 sq. km)
Water area (2000): 3.476884 sq. miles (9.005087 sq. km)
Total area (2000): 24.122026 sq. miles (62.475756 sq. km)
FIPS code: 14290
Located within: Puerto Rico (PR), FIPS 72
Location: 18.401964 N, 65.974387 W
ZIP Codes (1990):
Note: some ZIP codes may be omitted esp. for suburbs.
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