Maricopa County, Arizona

County seat: Phoenix · Population 4.7 million (2025) · 9,202 sq mi

Maricopa County is the most populous of Arizona's 15 counties, with 4,689,558 people (2025 estimate). Its county seat is Phoenix, which is also the state capital. The map shows its 25 cities and towns and the 6 neighboring counties.

Map of Maricopa County, Arizona with cities, towns and the county boundary
Maricopa County, Arizona with its cities and towns, unincorporated communities (CDPs) and neighboring counties. Boundaries: U.S. Census Bureau, 2025. Free to use with attribution (CC BY 4.0).
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Maricopa County facts

County seat
Phoenix
Population (2025 estimate)
4,689,558 +6% since 2020
Land area
9,202 sq mi 5th largest of 15
Water area
24 sq mi
Population density
510 per sq mi
Established
1871
Named after
Maricopa people tribe
Largest city
Phoenix 1,665,481
Median household income
$89,300
Cities and towns
25 plus 20 CDPs
ZIP codes
140
Time zone
Mountain (no DST)
FIPS code
04013

Cities and towns in Maricopa County

Maricopa County has 25 incorporated cities, towns and villages. Populations count the people living inside Maricopa County; cities that cross a county line also list the other counties.

NameTypePopulation 2025Also in
Phoenix (county seat)City1,665,481
MesaCity513,656
GilbertTown287,285
ChandlerCity278,748
GlendaleCity260,572
ScottsdaleCity243,006
PeoriaCity200,881Yavapai County
TempeCity190,571
SurpriseCity175,304
BuckeyeCity125,445
GoodyearCity125,359
AvondaleCity100,983
Queen CreekTown74,563Pinal County
El MirageCity35,820
Fountain HillsTown23,625
Paradise ValleyTown12,251
TollesonCity9,224
YoungtownTown7,039
Litchfield ParkCity6,727
WickenburgTown6,647Yavapai County
Cave CreekTown5,160
GuadalupeTown5,093
CarefreeTown3,600
Gila BendTown1,816
Apache JunctionCity383Pinal County

Unincorporated communities (CDPs)

Census-designated places are communities without their own city government; the county provides their services.

CommunityPopulationAlso in
Sun City37,486
Sun City West27,425
Anthem22,584
New River18,240
Sun Lakes13,924
Citrus Park5,115
Rio Verde2,261
Circle City1,089
Maricopa Colony836
Gila Crossing830
Komatke809
St. Johns631
Wittmann631
Aguila284
Wintersburg152
Morristown138
Arlington37
Theba7
Kaka0
Tonopah0

ZIP codes in Maricopa County

140 ZIP codes reach into Maricopa County. ZIP codes ignore county lines, so some also cover a neighboring county.

Population of Maricopa County, 2020–2025

Maricopa County grew by 264,256 people (+6%) between April 2020 and July 2025: 51,454 more births than deaths and a net gain of 213,387 people from migration.

Year (July 1)Population
20204,445,025
20214,500,059
20224,559,561
20234,601,077
20244,654,147
20254,689,558

Neighboring counties

Printable Maricopa County map

The PDF is a vector file with real text: it prints sharp on Letter paper and you can search it for a town. The PNG is 2400 pixels wide for slides and documents. Both are free to use with a credit to WhichCounty.

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Sources

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