Ranking of Colorado Cities and Places By Percentage of Population Aged 25 years and above with an Educational attainment of High School Graduate or Equivalent 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 Colorado (aged 25 years and above) who had an educational attainment of High School Graduate or Equivalent was 20.60%. Among all Colorado cities and places with a population of 10K or higher, Sterling city had the highest percentage of its population (aged 25 years and above) with an educational attainment of High School Graduate or Equivalent (42.85%), followed by Clifton CDP (35.05%), and Cañon City city (34.52%).

The chart below shows the top 10 Colorado cities and places (with a population of 10K+), and the table below shows the ranking of all Colorado 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 Colorado Cities and Places By Percentage of Population (Aged 25yrs+) with an Educational Attainment of High School Graduate or Equivalent in 2021
Sterling city
Clifton CDP
Cañon City city
Sherrelwood CDP
Rifle city
Welby CDP
Brighton city
Northglenn city
Federal Heights city
Fort Morgan city
Ranking of Colorado Cities and Places By Percentage of Population (Aged 25yrs+) with an Educational Attainment of High School Graduate or Equivalent in 2021
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Rank City of Place Percentage of Population (Aged 25yrs+) (%)
1 Sterling city 42.85
2 Clifton CDP 35.05
3 Cañon City city 34.52
4 Sherrelwood CDP 33.77
5 Rifle city 32.66
6 Welby CDP 32.59
7 Brighton city 32.48
8 Northglenn city 32.47
9 Federal Heights city 32.08
10 Fort Morgan city 31.23
11 Pueblo city 30.82
12 Commerce City city 29.09
13 Evans city 28.67
14 Fruita city 28.23
15 Security-Widefield CDP 28.03
16 Cimarron Hills CDP 27.51
17 Fort Carson CDP 27.38
18 Montrose city 26.74
19 Thornton city 26.66
20 Berkley CDP 26.25
21 Greeley city 25.97
22 Pueblo West CDP 25.31
23 Frederick town 24.78
24 Aurora city 24.69
25 Grand Junction city 24.31
26 Loveland city 24.05
27 Wheat Ridge city 23.40
28 Johnstown town 23.30
29 Arvada city 22.63
30 Englewood city 22.19
31 Lakewood city 21.65
32 Fountain city 21.50
33 Firestone town 21.43
34 Westminster city 20.79
35 Dakota Ridge CDP 20.36
36 Golden city 20.32
37 Wellington town 20.27
38 Colorado Springs city 19.11
39 Longmont city 18.36
40 Glenwood Springs city 18.25
41 Berthoud town 17.75
42 Windsor town 17.12
43 Columbine CDP 16.72
43 Ken Caryl CDP 16.72
44 Four Square Mile CDP 16.63
45 Denver city 15.98
46 Littleton city 15.93
47 Black Forest CDP 14.83
48 Castle Rock town 14.71
49 Fort Collins city 14.40
50 Edwards CDP 14.12
51 Parker town 13.77
52 Centennial city 13.52
53 Durango city 13.33
54 Broomfield city 12.98
55 Monument town 12.33
56 Steamboat Springs city 12.08
57 Lafayette city 10.67
58 Highlands Ranch CDP 9.93
59 Louisville city 9.70
60 Erie town 8.81
61 Castle Pines city 8.75
62 Cherry Creek CDP 7.68
63 Greenwood Village city 7.08
64 Lone Tree city 6.23
65 Boulder city 5.92
66 Superior town 4.84
67 Gunbarrel CDP 3.96