Maricopa County, Arizona

Maricopa County
County
The Maricopa County Courthouse and Old Phoenix City Hall, also known as the County-City Administration Building, in 2013
Flag
Location within the U.S. state of Arizona
Arizona's location within the U.S.
Coordinates: 33°30′50″N 112°28′33″W / 33.5139°N 112.4758°W / 33.5139; -112.4758
Country	United States
State	Arizona
Founded	February 14, 1871
Named for	Maricopa people
Seat	Phoenix
Largest city	Phoenix
Area
• Total	9,224 sq mi (23,890 km2)
• Land	9,200 sq mi (24,000 km2)
• Water	24 sq mi (60 km2)  0.3%
Population  (2020)[1]
• Total	4,420,568
• Density	480/sq mi (190/km2)
Time zone	UTC−7 (Mountain)
Website	www.maricopa.gov

Maricopa County (/ˌmærɪˈkoʊpə/ MARR-i-KOH-pə) is a county in the south-central part of the U.S. state of Arizona. As of the 2020 census, its population was 4,420,568,^[1] making it the state's most populous county. It is more populous than 23 states.

The county seat is Phoenix,^[2] the state capital and fifth-most populous city in the country.

1. ↑ ^{1.0 1.1} "QuickFacts: Maricopa County, Arizona". United States Census Bureau. Retrieved August 8, 2023.
2. ↑ "Find a County". National Association of Counties. Retrieved June 7, 2011.