'Maricopa County, AZ' definitions:

Maricopa -- U.S. County in Arizona

From: Gazetteer 2000
Name :
Maricopa -- U.S. County in Arizona
Population (2000) :
3072149
Housing Units (2000) :
1250231
Land area (2000) :
9203.137806 sq. miles (23836.016480 sq. km)
Water area (2000) :
21.128468 sq. miles (54.722478 sq. km)
Total area (2000) :
9224.266274 sq. miles (23890.738958 sq. km)
Located within :
Arizona (AZ), FIPS 04
Location :
33.494514 N, 112.087906 W