Maricopa County, Arizona Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 1st-largest in Arizona
The population of Maricopa County, Arizona is 4,491,987 as of the 2023 American Community Survey, making it the 1st-largest county in Arizona. The median household income is $85,518, the median home value is $414,700, and the median age is 37.5.
The population of Maricopa County has grown 22.2% since 2010 (3,825,183 → 4,673,096), a +1.44% annualized rate.
4,491,987
Population
+1.44%
Annual growth
488
People / sq mi
$85,518
Median Income
$414,700
Median Home Value
Maricopa County covers 9,202 sq mi of land at 488.2 people per square mile.
About Maricopa County, AZ
Maricopa County is a county in Arizona with a population of 4,491,987. It ranks #1 among counties in Arizona by population. The median age is 37.5, younger than the national median. The population is 49.7% male and 50.3% female.
The median household income in Maricopa County is $85,518, above the US median of $74,580. 7.8% of residents live below the federal poverty level. Home values sit at a median of $414,700, with monthly rent averaging $1,587. The homeownership rate of 65.0% is close to the national rate of 64.8%.
Educational attainment in Maricopa County reflects 35.9% of adults 25 and older holding a bachelor's degree or higher, near the national average of 34.3%. Roughly 18.8% of workers primarily work from home, noticeably above the national work-from-home rate of 14.2%. The average commute is 26.1 minutes each way.
Maricopa County Population History (2010-2024)
The county of Maricopa County had a population of 3,825,183 in 2010 and 4,673,096 in 2024, a 22.2% growth over 14 years. The peak was 4,673,096 in 2024. Average annual growth rate: 1.44%.
4,673,096
Population (2024)
3,825,183
Population (2010)
4,673,096
Peak (2024)
1.44%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 3,825,183 |
| 2011 | 3,875,371 |
| 2012 | 3,948,165 |
| 2013 | 4,018,657 |
| 2014 | 4,094,842 |
| 2015 | 4,174,423 |
| 2016 | 4,258,019 |
| 2017 | 4,329,227 |
| 2018 | 4,405,306 |
| 2019 | 4,492,261 |
| 2020 | 4,445,415 |
| 2021 | 4,500,147 |
| 2022 | 4,564,457 |
| 2023 | 4,615,625 |
| 2024 | 4,673,096 |
Race & Ethnicity
| White | 63.0% |
| Black or African American | 5.8% |
| Asian | 0.6% |
| Hispanic or Latino (any race) | 3.6% |
| Two or More Races | 0.1% |
Age & Sex
37.5
Median Age
50.3%
Female
49.7%
Male
16.0%
Age 65+
Age Distribution
Children (under 15): 18.6% · Seniors (65+): 16.0%
Income & Poverty
| Median household income | $85,518+$8,646 vs state |
| Mean household income | $115,162 |
| Per-capita income | $44,210 |
| Poverty rate | 7.8%-1.1% vs state |
| Unemployment rate | 3.0% |
| Employment-to-population | 61.7% |
Top Industries by Employment
The largest employment sector in Maricopa County is professional & business services, accounting for 20.8% of workers.
How residents commute
1.3%
Drive alone
1.4%
Carpool
66.6%
Public transit
18.8%
Work from home
26.1 min
Avg commute
Housing
$414,700+$55,800 vs state
Median home value
$1,587
Median rent
65.0%
Homeownership rate
1,850,862
Total housing units
91.7%
Occupied
8.3%
Vacant
35.0%
Renter-occupied
Social & access
89.3%
With health insurance
96.9%
With broadband internet
45.7%
Foreign-born
6.9%
Veterans (18+)
11.9%
With a disability
74.2%
Speak language other than English at home
Education
89.5%
High School+
35.9%
Bachelor's+
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Common questions about Maricopa County, AZ
Frequently Asked Questions
Maricopa County, Arizona has a population of 4,491,987 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 1st-largest county in Arizona. Population density is 488 people per square mile.
The population of Maricopa County has grown 22.2% since 2010 (3,825,183 → 4,673,096), a +1.44% annualized rate.
The median household income in Maricopa County, Arizona is $85,518, with mean (average) household income of $115,162 and per-capita income of $44,210. 7.8% of residents live below the federal poverty level.
In Maricopa County, the largest racial and ethnic groups are White (63.0%), Black or African American (5.8%), Hispanic or Latino (3.6%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Maricopa County, Arizona is 37.5 years. Residents are 50.3% female and 49.7% male.
The median home value in Maricopa County is $414,700 and median monthly rent is $1,587. 65.0% of occupied housing units are owner-occupied. The county has 1,850,862 total housing units, 8.3% of which are vacant.
The largest employment sector in Maricopa County, Arizona is professional, scientific, and management services, employing 20.8% of workers. The unemployment rate is 3.0%.
Phoenix is among the largest cities associated with Maricopa County, Arizona, with a population of 1,624,832.
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.