'Honolulu County, HI' definitions:

Honolulu -- U.S. County in Hawaii

From: Gazetteer 2000
Name :
Honolulu -- U.S. County in Hawaii
Population (2000) :
876156
Housing Units (2000) :
315988
Land area (2000) :
599.766341 sq. miles (1553.387626 sq. km)
Water area (2000) :
1527.082697 sq. miles (3955.125860 sq. km)
Total area (2000) :
2126.849038 sq. miles (5508.513486 sq. km)
Located within :
Hawaii (HI), FIPS 15
Location :
21.426126 N, 158.035861 W