What is "las piedras zona"

Population (2000): 6352
Housing Units (2000): 2336
Land area (2000): 1.178032 sq. miles (3.051090 sq. km)
Water area (2000): 0.000000 sq. miles (0.000000 sq. km)
Total area (2000): 1.178032 sq. miles (3.051090 sq. km)
FIPS code: 44390
Located within: Puerto Rico (PR), FIPS 72
Location: 18.176999 N, 65.869196 W
ZIP Codes (1990):
Note: some ZIP codes may be omitted esp. for suburbs.
Headwords: