Maricopa County, Arizona Basics:
Maricopa County Arizona - Government Site
Population: 3,940,612
Area: 9200 square miles
County seat: Phoenix
Area code(s) in use: 520 623 480 928 602
Time zone: MST
High school graduate or higher: 86.2%
Bachelor's degree or higher: 29.5%
Median household income: $54,385
Persons in poverty: 15.8%
Home ownership rate: 63.8%
Mean travel time to work: 25.4 minutes