Maricopa County, Arizona Age & Gender Statistics (2024)

Total Population

4,559,748

Median Age

37.6

Male Median

36.7

Female Median

38.7

Maricopa County, Arizona Population Growth

Population trends in
Figure 1: Annual population growth trend for (2010–2024).

Maricopa County, Arizona Demographic Trend

Since 2010, the population of has changed by +21.5%%.

+21.5%% Growth

Maricopa County, Arizona Age & Gender Pyramid

Population pyramid for

Figure 2: Population distribution by age and gender for 2024.


Maricopa County, Arizona Historical Population Data

YearMedian AgePopulation
202437.64,559,748
202337.54,491,987
202237.14,430,871
202136.94,367,186
202036.64,412,779
201936.44,328,810
201836.14,253,913
201736.04,155,501
201635.84,088,549
201535.64,018,143
201435.33,947,382
201335.03,889,161
201234.63,841,819
201134.43,798,374
201034.13,751,410

Maricopa County, Arizona Age Group Breakdown (2024)

Age CohortPercentage
Under 55.6%
5–1716.8%
18–249.2%
25–3414.6%
35–5425.7%
55–6411.7%
65+16.3%

Dependency Ratios for Maricopa County, Arizona

Total Dependency Ratio:
63.3
Youth Dependency:
36.7
Old-Age Dependency:
26.6

The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).



Age & Gender FAQs for Maricopa County, Arizona

The median age in Maricopa County, Arizona is 37.6 years.

According to latest Census data, the total population of Maricopa County, Arizona is 4,559,748.

In Maricopa County, Arizona, seniors (ages 65+) make up 16.3% of the population, while children under 18 represent 16.8%.

Based on historical data since 2010, the population in Maricopa County, Arizona is aging.
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