RANKING · 1990 CENSUS · 15 SHOWN OF 15

Fewest graduate degrees, Arizona counties · 1990

Arizona counties with the smallest share of adults 25+ holding a graduate or professional degree (1990 ACS). This list covers the 15 counties in Arizona that qualify, ranked against each other statewide. The median across all 15 is 4.4%.

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SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPGRADUATE DEGREEVS –

01Pinal County, AZAZ539,3803.1%–

02La Paz County, AZAZ16,7113.2%–

03Apache County, AZAZ64,4453.6%–

04Navajo County, AZAZ109,9463.7%–

05Mohave County, AZAZ228,1023.7%–

06Gila County, AZAZ53,8013.8%–

07Santa Cruz County, AZAZ50,0204.1%–

08Graham County, AZAZ40,1574.4%–

09Greenlee County, AZAZ9,3124.7%–

10Yuma County, AZAZ224,4495.0%–

11Yavapai County, AZAZ252,5526.1%–

12Cochise County, AZAZ126,3326.1%–

13Maricopa County, AZAZ4,689,5587.1%–

14Pima County, AZAZ1,074,6859.0%–

15Coconino County, AZAZ144,3689.1%–

SHOWING 1–15 OF 15

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS