Ranking of Arizona Cities and Places By Percentage of Population Aged 25 years and above with an Educational attainment of Less than High School Diploma in 2021 (ACS-5Yrs)

Updated on September 3, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, the percentage of the population of Arizona (aged 25 years and above) who had an educational attainment of Less than High School Diploma was 11.70%. Among all Arizona cities and places with a population of 10K or higher, San Luis city had the highest percentage of its population (aged 25 years and above) with an educational attainment of Less than High School Diploma (48.92%), followed by Somerton city (33.90%), and Nogales city (32.07%).

The chart below shows the top 10 Arizona cities and places (with a population of 10K+), and the table below shows the ranking of all Arizona cities and places (with a population of 10K+).

You can see similar information for other educational attainments.

You can also see similar information for other states and for the United States.

Ranking of Arizona Cities and Places By Percentage of Population (Aged 25yrs+) with an Educational Attainment of Less than High School Diploma in 2021
San Luis city
Somerton city
Nogales city
Eloy city
Douglas city
Florence town
El Mirage city
Flowing Wells CDP
Yuma city
Camp Verde town
Ranking of Arizona Cities and Places By Percentage of Population (Aged 25yrs+) with an Educational Attainment of Less than High School Diploma in 2021
Items per page:
0 of 0
Rank City of Place Percentage of Population (Aged 25yrs+) (%)
1 San Luis city 48.92
2 Somerton city 33.90
3 Nogales city 32.07
4 Eloy city 27.87
5 Douglas city 25.51
6 Florence town 25.38
7 El Mirage city 21.71
8 Flowing Wells CDP 19.11
9 Yuma city 17.75
10 Camp Verde town 17.53
11 Rio Rico CDP 17.43
12 New Kingman-Butler CDP 17.42
13 Avondale city 16.89
14 Glendale city 16.50
15 Phoenix city 16.46
16 Bullhead City city 15.80
17 Drexel Heights CDP 15.55
18 Coolidge city 14.68
19 Tucson city 13.75
20 Apache Junction city 13.50
21 Buckeye city 13.23
22 Casa Grande city 13.18
23 Valencia West CDP 12.79
24 Fort Mohave CDP 12.46
25 Fortuna Foothills CDP 11.85
26 Tucson Estates CDP 10.49
27 Chino Valley town 10.39
28 Kingman city 10.11
29 Prescott Valley town 10.03
30 Mesa city 9.55
31 Cottonwood city 9.49
32 Lake Havasu City city 8.90
33 Goodyear city 8.46
34 Verde Village CDP 7.75
35 Show Low city 7.47
36 Peoria city 7.42
37 Payson town 7.31
38 San Tan Valley CDP 7.29
39 Maricopa city 7.11
40 Sierra Vista Southeast CDP 6.92
41 Sierra Vista city 6.81
42 Tempe city 6.55
43 Surprise city 6.51
44 Sun City CDP 6.50
45 Gold Canyon CDP 6.10
46 Chandler city 5.94
47 Sahuarita town 5.42
48 Casas Adobes CDP 5.29
49 Prescott city 4.81
50 Marana town 4.69
51 New River CDP 4.66
52 Green Valley CDP 4.58
53 Vail CDP 4.24
54 Flagstaff city 4.07
55 Gilbert town 3.57
56 Queen Creek town 3.03
57 Sun City West CDP 3.02
58 Oro Valley town 2.89
59 Scottsdale city 2.75
60 Sun Lakes CDP 2.73
61 Tucson Mountains CDP 2.53
62 Fountain Hills town 1.95
63 Anthem CDP 1.82
64 Catalina Foothills CDP 1.74
65 Tanque Verde CDP 1.55
66 Saddlebrooke CDP 1.42
67 Paradise Valley town 1.28