Data / Rankings / High school graduate or higher, population 25 and over / Counties in Arizona

Counties in Arizona by high school graduate or higher, population 25 and over

Yavapai County had the highest high school graduate or higher, population 25 and over of 15 counties in 2021, at 91.6%. Yuma County had the lowest, at 74.9%. The median was 87.5% and the figure for Arizona was 88.3%. Source: the U.S. Census Bureau.

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Highest91.6Yavapai County
Lowest74.9Yuma County
Median87.515 counties
Arizona88.3History

Map of counties, 2021

Apache County: 82.2 %Cochise County: 88.7 %Coconino County: 91 %Gila County: 86.9 %Graham County: 83.5 %Greenlee County: 87.7 %La Paz County: 84 %Maricopa County: 88.8 %Mohave County: 87.5 %Navajo County: 84.6 %Pima County: 89.4 %Pinal County: 87.6 %Santa Cruz County: 77.7 %Yavapai County: 91.6 %Yuma County: 74.9 %
  • Under 83
  • 83 to 86
  • 86 to 88
  • 88 to 89
  • 89 and over
%, 2021. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2021

Yavapai County: 91.6 %Yavapai County91.6Coconino County: 91 %Coconino County91Pima County: 89.4 %Pima County89.4Maricopa County: 88.8 %Maricopa County88.8Cochise County: 88.7 %Cochise County88.7Greenlee County: 87.7 %Greenlee County87.7Pinal County: 87.6 %Pinal County87.6Mohave County: 87.5 %Mohave County87.5Gila County: 86.9 %Gila County86.9Navajo County: 84.6 %Navajo County84.6La Paz County: 84 %La Paz County84Graham County: 83.5 %Graham County83.5Apache County: 82.2 %Apache County82.2Santa Cruz County: 77.7 %Santa Cruz County77.7Yuma County: 74.9 %Yuma County74.9Yavapai County: 91.6 %Yavapai County91.6Coconino County: 91 %Coconino County91Pima County: 89.4 %Pima County89.4Maricopa County: 88.8 %Maricopa County88.8Cochise County: 88.7 %Cochise County88.7Greenlee County: 87.7 %Greenlee County87.7Pinal County: 87.6 %Pinal County87.6Mohave County: 87.5 %Mohave County87.5Gila County: 86.9 %Gila County86.9Navajo County: 84.6 %Navajo County84.6La Paz County: 84 %La Paz County84Graham County: 83.5 %Graham County83.5Apache County: 82.2 %Apache County82.2Santa Cruz County: 77.7 %Santa Cruz County77.7Yuma County: 74.9 %Yuma County74.9
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2021 (%)
1Yavapai County91.6
2Coconino County91
3Pima County89.4
4Maricopa County88.8
5Cochise County88.7
6Greenlee County87.7
7Pinal County87.6
8Mohave County87.5
9Gila County86.9
10Navajo County84.6
11La Paz County84
12Graham County83.5
13Apache County82.2
14Santa Cruz County77.7
15Yuma County74.9

Other periods

About this ranking

People aged 25 and over who hold a regular high school diploma, a GED or alternative credential, or any higher level of education, as a percentage of all people aged 25 and over. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

Measures the adult population, not students: it is not the high school graduation rate of a class. Not comparable with the EU share below upper secondary education, which covers ages 25 to 64.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b15003.dat. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Census Bureau. (2026). American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs (Counties in Arizona by high school graduate or higher, population 25 and over, 2021) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b15003.dat

MLA 9

American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs, Counties in Arizona by high school graduate or higher, population 25 and over, 2021. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b15003.dat. Invokely, https://invokely.ai/rankings/high-school-graduate-or-higher/arizona-counties?period=2021. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs. Counties in Arizona by high school graduate or higher, population 25 and over, 2021. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b15003.dat. Also distributed by Invokely, https://invokely.ai/rankings/high-school-graduate-or-higher/arizona-counties?period=2021.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs, Counties in Arizona by high school graduate or higher, population 25 and over, 2021 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b15003.dat, via Invokely: https://invokely.ai/rankings/high-school-graduate-or-higher/arizona-counties?period=2021 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_arizona_by_2021,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs: Counties in Arizona by high school graduate or higher, population 25 and over, 2021}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b15003.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/high-school-graduate-or-higher/arizona-counties?period=2021. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary\_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b15003.dat. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs: Counties in Arizona by high school graduate or higher, population 25 and over, 2021
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b15003.dat
L2  - https://invokely.ai/rankings/high-school-graduate-or-higher/arizona-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/high-school-graduate-or-higher/arizona-counties?period=2021.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b15003.dat. Retrieved 2026-10-12.
ER  -
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Rank Counties in Arizona by high school graduate or higher, population 25 and over using official data, and cite the source.
rank_places {"indicator":"high_school_graduate_share","level":"province","within":"Arizona","limit":10}
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Questions

Which county has the highest high school graduate or higher, population 25 and over?

Yavapai County, with 91.6% in 2021, according to the U.S. Census Bureau.

Which county has the lowest high school graduate or higher, population 25 and over?

Yuma County, with 74.9% in 2021.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs. Retrieved 2026-10-12.

High school graduate or higher, population 25 and over: other rankings

Counties in Arizona: more rankings