What is "holiday hills"

Population (2000): 831
Housing Units (2000): 289
Land area (2000): 0.946789 sq. miles (2.452172 sq. km)
Water area (2000): 0.037038 sq. miles (0.095928 sq. km)
Total area (2000): 0.983827 sq. miles (2.548100 sq. km)
FIPS code: 35515
Located within: Illinois (IL), FIPS 17
Location: 42.293972 N, 88.226833 W
ZIP Codes (1990):
Note: some ZIP codes may be omitted esp. for suburbs.
Headwords: