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
Remote work is unusually prominent in Maricopa County: 18.8% of workers primarily work from home, above the 14.0% national rate. Maricopa County is a county in Arizona with a population of 4,491,987. That makes it one of the ten largest counties in Arizona in the country, at #1 by population.
Median household income is $85,518, above the US median of $78,538. The poverty rate is 7.8%, below the national 12.4%. Home prices are steep, with the typical property valued at $414,700, with typical rent around $1,587.
Educational attainment is on the higher side for US counties — 35.9% of adults hold a four-year degree, near the national 35.0%. Remote work is widespread — 18.8% of workers stay home, above the national 14.0%, and the average commute runs about 26 minutes each way.
The remote-work concentration is telling in Maricopa County — it skews toward higher-income, college-educated workers and reshapes both commute patterns and housing demand.
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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County rankings
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.
Maricopa County, AZ Climate
Maricopa County, AZ has an average annual temperature of 21.8°C (71°F) and receives about 178 mm of precipitation per year. The warmest month is July and the coldest is December. Figures are 1970–2000 climate normals.
21.8°C
Avg Temp
178
Precip (mm/yr)
Jul
Hottest Month
Dec
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 11° / 53° | 18 mm |
| February | 14° / 57° | 18 mm |
| March | 16° / 62° | 20 mm |
| April | 20° / 69° | 5 mm |
| May | 25° / 77° | 3 mm |
| June | 30° / 87° | 2 mm |
| July | 33° / 92° | 17 mm |
| August | 32° / 90° | 28 mm |
| September | 29° / 84° | 20 mm |
| October | 22° / 72° | 14 mm |
| November | 15° / 60° | 14 mm |
| December | 11° / 52° | 19 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Maricopa County, AZ
The most comfortable months to visit Maricopa County, AZ are typically April, October and May, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 42°C high). The coldest is December (near 3°C low). August is usually the wettest month.
Where to stay near Maricopa County
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.