What is "cidra zona"

Population (2000): 4881
Housing Units (2000): 1755
Land area (2000): 0.780350 sq. miles (2.021096 sq. km)
Water area (2000): 0.001265 sq. miles (0.003276 sq. km)
Total area (2000): 0.781615 sq. miles (2.024372 sq. km)
FIPS code: 18074
Located within: Puerto Rico (PR), FIPS 72
Location: 18.175949 N, 66.160073 W
ZIP Codes (1990):
Note: some ZIP codes may be omitted esp. for suburbs.
Headwords: