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Collection 5 Resources

Pima County, AZ Population by Age

The median age in Pima County, AZ is 38.9, as per 2021 ACS 5-Year Estimates. Of the total population, 17.20% were under the age of 15, 22.12% aged 15 to 29, 40.88% aged 30 to 64, 17.62% aged 65 to 84, and 2.18% were 85 years of age and older.
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By Neilsberg Research
Updated Sep 17, 2023

Pima County, AZ population age distribution

A complete breakdown of Pima County's age demographics from 0 to 85 years, distributed across 18 age groups is listed in the table below.

Age Group Population % of Total Population
Under 5 years 55,710 5.38%
5 to 9 years 59,948 5.79%
10 to 14 years 62,351 6.02%
15 to 19 years 69,312 6.7%
20 to 24 years 88,454 8.55%
25 to 29 years 71,152 6.87%
30 to 34 years 61,385 5.93%
35 to 39 years 62,891 6.08%
40 to 44 years 57,300 5.54%
45 to 49 years 56,635 5.47%
50 to 54 years 56,694 5.48%
55 to 59 years 62,735 6.06%
60 to 64 years 65,528 6.33%
65 to 69 years 64,551 6.24%
70 to 74 years 53,987 5.22%
75 to 79 years 39,794 3.84%
80 to 84 years 24,072 2.33%
85 years and over 22,564 2.18%
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TABLE OF CONTENTS

Pima County, AZ population by age group

Key stats
335,775
Population under 25 years
252,728
Population aged 25-44
241,592
Population aged 45-64
204,968
Population aged 65+

Sources: U.S. Census Bureau, American Community Survey (ACS) 2021

The graph shows Pima County's population by age group, with age group on x-axis and the respective age group's percent of the total population on y-axis
Pima County, AZ population by age group. The largest age group was 20-24 years with a poulation of 88,454 (8.55% of the total population). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

The largest age group in Pima County, AZ was for the group of age 20-24 years with a population of 88,454 (8.55%), according to the 2021 American Community Survey.

At the same time, the smallest age group in Pima County, AZ was the 85+ years with a population of 22,564 (2.18%).

Pima County, AZ population by age cohort

To better understand the age distribution of Pima County, AZ's population, we divided it into the following 3 cohorts:

  • Children : Under the age of 18 years
  • Adults (working population): Between the age of 18 and 64 years
  • Seniors: 65 years and above
The pie chart shows Pima County's population divided into segments, with each segment representing an age cohort. The area of each segment is in the same proportion of a circle as the population of the cohort is of the total population.
Pima County, AZ population by age cohorts (Children: Under 18 years; Working population: 18-64 years; Senior population: 65 years or more). The largest age group was 18 - 64 years with a poulation of 614,467 (59.37% of the total population). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Here's the population for each of the three cohorts.

Age Group Population % of Total Population
Under 18 years 215,628 20.83%
18 to 64 years 614,467 59.37%
85 years and over 204,968 19.8%
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Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:

  • Pima County's population under 18 was 20.83%, compared to the 22.51% nationwide.
  • Pima County's working population (between 18 and 64) was 59.37%, compared to 61.45% nationwide.
  • Pima County's elderly or the senior population (over 65 age) was 19.80% as compared to 16.04% nationwide.

Pima County, AZ population pyramid

Population pyramid for Pima County, AZ is charted below using the estimates from U.S. Census Bureau's American Community Survey 5-Year estimates. A wide base suggests population increase, narrow base indicates declining birth rates.

Key stats from our analysis of the Pima County's population pyramid:

  • Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Pima County, AZ, is 27.3.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Pima County, AZ, is 31.4.
  • Total dependency ratio for Pima County, AZ is 58.7.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Pima County, AZ is 3.2.
The graph shows Pima County's population across different age group and gender, with population on x-axis and population y-axis. The male population is plotted on the left in blue color whereas the female population is plotted on the right in pink color.
Pima County, AZ population pyramid i.e. Pima County population distrubution across age and gender. Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Here's the Pima County, AZ's male and female population across different age groups:

Age Group Population(Male) Population(Female) Total Population
Under 5 years 28,436 27,274 55,710
5 to 9 years 29,952 29,996 59,948
10 to 14 years 32,615 29,736 62,351
15 to 19 years 35,107 34,205 69,312
20 to 24 years 44,901 43,553 88,454
25 to 29 years 37,002 34,150 71,152
30 to 34 years 32,064 29,321 61,385
35 to 39 years 31,882 31,009 62,891
40 to 44 years 28,804 28,496 57,300
45 to 49 years 28,132 28,503 56,635
50 to 54 years 27,924 28,770 56,694
55 to 59 years 30,975 31,760 62,735
60 to 64 years 30,221 35,307 65,528
65 to 69 years 29,690 34,861 64,551
70 to 74 years 25,640 28,347 53,987
75 to 79 years 18,288 21,506 39,794
80 to 84 years 11,017 13,055 24,072
85 years and over 9,069 13,495 22,564
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Things to know

What is the population of Pima County, AZ under 18?

Pima County's population under the age of 18 is 215,628, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 20.83% of the total resident population of Pima County, AZ.

What is the aging population in Pima County, AZ?

Pima County's population aged 65 years and above was 204,968. As per the U.S. Census Bureau's American Community Survey, this population is 19.80% of the entire population.

References

Datasets

Pima County, AZ Age Group Population Dataset: A complete breakdown of Pima County age demographics from 0 to 85 years, distributed across 18 age groups
ACS
Free
Neilsberg
CSV, JSON
2017-2021
CC BY 4.0
About this dataset

Context

The dataset tabulates the Pima County population distribution across 18 age groups. It lists the population in each age group along with the percentage population relative of the total population for Pima County. The dataset can be utilized to understand the population distribution of Pima County by age. For example, using this dataset, we can identify the largest age group in Pima County.

Key observations

The largest age group in Pima County, AZ was for the group of age 20-24 years with a population of 88,454 (8.55%), according to the 2021 American Community Survey. At the same time, the smallest age group in Pima County, AZ was the 85+ years with a population of 22,564 (2.18%). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Pima County population by age group

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Age groups:

  • Under 5 years
  • 5 to 9 years
  • 10 to 14 years
  • 15 to 19 years
  • 20 to 24 years
  • 25 to 29 years
  • 30 to 34 years
  • 35 to 39 years
  • 40 to 44 years
  • 45 to 49 years
  • 50 to 54 years
  • 55 to 59 years
  • 60 to 64 years
  • 65 to 69 years
  • 70 to 74 years
  • 75 to 79 years
  • 80 to 84 years
  • 85 years and over

Variables / Data Columns

  • Age Group: This column displays the age group in consideration
  • Population: The population for the specific age group in the Pima County is shown in this column.
  • % of Total Population: This column displays the population of each age group as a proportion of Pima County total population. Please note that the sum of all percentages may not equal one due to rounding of values.

Good to know

Margin of Error

Data in the dataset are based on the estimates and are subject to sampling variability and thus a margin of error. Neilsberg Research recommends using caution when presening these estimates in your research.

Custom data

If you do need custom data for any of your research project, report or presentation, you can contact our research staff at research@neilsberg.com for a feasibility of a custom tabulation on a fee-for-service basis.

Inspiration

Neilsberg Research Team curates, analyze and publishes demographics and economic data from a variety of public and proprietary sources, each of which often includes multiple surveys and programs. The large majority of Neilsberg Research aggregated datasets and insights is made available for free download at https://www.neilsberg.com/research/.

Recommended for further research

This dataset is a part of the main dataset for Pima County Population by Age. You can refer the same here

Pima County, AZ Age Cohorts Dataset: Children, Working Adults, and Seniors in Pima County - Population and Percentage Analysis
ACS
Free
Neilsberg
CSV, JSON
2017-2021
CC BY 4.0
About this dataset

Context

The dataset tabulates the Pima County population by age cohorts (Children: Under 18 years; Working population: 18-64 years; Senior population: 65 years or more). It lists the population in each age cohort group along with its percentage relative to the total population of Pima County. The dataset can be utilized to understand the population distribution across children, working population and senior population for dependency ratio, housing requirements, ageing, migration patterns etc.

Key observations

The largest age group was $b3_v1 with a poulation of $b3_v2 ($b3_v3 of the total population). Source: U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Pima County population by age cohort

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Age cohorts:

  • Under 18 years
  • 18 to 64 years
  • 65 years and over

Variables / Data Columns

  • Age Group: This column displays the age cohort for the Pima County population analysis. Total expected values are 3 groups ( Children, Working Population and Senior Population).
  • Population: The population for the age cohort in Pima County is shown in the following column.
  • Percent of Total Population: The population as a percent of total population of the Pima County is shown in the following column.

Good to know

Margin of Error

Data in the dataset are based on the estimates and are subject to sampling variability and thus a margin of error. Neilsberg Research recommends using caution when presening these estimates in your research.

Custom data

If you do need custom data for any of your research project, report or presentation, you can contact our research staff at research@neilsberg.com for a feasibility of a custom tabulation on a fee-for-service basis.

Inspiration

Neilsberg Research Team curates, analyze and publishes demographics and economic data from a variety of public and proprietary sources, each of which often includes multiple surveys and programs. The large majority of Neilsberg Research aggregated datasets and insights is made available for free download at https://www.neilsberg.com/research/.

Recommended for further research

This dataset is a part of the main dataset for Pima County Population by Age. You can refer the same here

Pima County, AZ Population Pyramid Dataset: Age Groups, Male and Female Population, and Total Population for Demographics Analysis
ACS
Free
Neilsberg
CSV, JSON
2017-2021
CC BY 4.0
About this dataset

Context

The dataset tabulates the data for the Pima County, AZ population pyramid, which represents the Pima County population distribution across age and gender, using estimates from the U.S. Census Bureau American Community Survey 5-Year estimates. It lists the male and female population for each age group, along with the total population for those age groups. Higher numbers at the bottom of the table suggest population growth, whereas higher numbers at the top indicate declining birth rates. Furthermore, the dataset can be utilized to understand the youth dependency ratio, old-age dependency ratio, total dependency ratio, and potential support ratio.

Key observations

  • Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Pima County, AZ, is 27.3.
  • Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Pima County, AZ, is 31.4.
  • Total dependency ratio for Pima County, AZ is 58.7.
  • Potential support ratio, which is the number of youth (working age population) per elderly, for Pima County, AZ is 3.2.

Pima County population pyramid

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates.

Age groups:

  • Under 5 years
  • 5 to 9 years
  • 10 to 14 years
  • 15 to 19 years
  • 20 to 24 years
  • 25 to 29 years
  • 30 to 34 years
  • 35 to 39 years
  • 40 to 44 years
  • 45 to 49 years
  • 50 to 54 years
  • 55 to 59 years
  • 60 to 64 years
  • 65 to 69 years
  • 70 to 74 years
  • 75 to 79 years
  • 80 to 84 years
  • 85 years and over

Variables / Data Columns

  • Age Group: This column displays the age group for the Pima County population analysis. Total expected values are 18 and are define above in the age groups section.
  • Population (Male): The male population in the Pima County for the selected age group is shown in the following column.
  • Population (Female): The female population in the Pima County for the selected age group is shown in the following column.
  • Total Population: The total population of the Pima County for the selected age group is shown in the following column.

Good to know

Margin of Error

Data in the dataset are based on the estimates and are subject to sampling variability and thus a margin of error. Neilsberg Research recommends using caution when presening these estimates in your research.

Custom data

If you do need custom data for any of your research project, report or presentation, you can contact our research staff at research@neilsberg.com for a feasibility of a custom tabulation on a fee-for-service basis.

Inspiration

Neilsberg Research Team curates, analyze and publishes demographics and economic data from a variety of public and proprietary sources, each of which often includes multiple surveys and programs. The large majority of Neilsberg Research aggregated datasets and insights is made available for free download at https://www.neilsberg.com/research/.

Recommended for further research

This dataset is a part of the main dataset for Pima County Population by Age. You can refer the same here

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About the author

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Neilsberg Research
Neilsberg Research team are data scientists with expertise in processing, analysis and visualization of big data helping small businesses make right decisions.
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Collection 5 Resources