What is "yauco zona"

Population (2000): 19609
Housing Units (2000): 7452
Land area (2000): 2.868773 sq. miles (7.430087 sq. km)
Water area (2000): 0.000000 sq. miles (0.000000 sq. km)
Total area (2000): 2.868773 sq. miles (7.430087 sq. km)
FIPS code: 88035
Located within: Puerto Rico (PR), FIPS 72
Location: 18.035758 N, 66.857410 W
ZIP Codes (1990):
Note: some ZIP codes may be omitted esp. for suburbs.
Headwords: