Ranking of Colorado Congressional Districts By Population Aged 25 years and above with an Educational attainment of High School Graduate or Equivalent in 2021 (ACS-5Yrs)
Updated on September 4, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, the population of Colorado (aged 25 years and above) who had an educational attainment of High School Graduate or Equivalent was 810,976. Among all Colorado congressional districts, CO CD 3 had the highest population (aged 25 years and above) with an educational attainment of High School Graduate or Equivalent (139,835), followed by CO CD 7 (134,309), and CO CD 4 (129,752).
The chart below shows the top 7 Colorado congressional districts, and the table below shows the ranking of all Colorado congressional districts.
You can see similar information for other educational attainments.
You can also see similar information for other states and for the United States.
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Related Topics: Colorado ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census - ACS 5-Year Estimates.
Ranking of Colorado Congressional Districts By Population (Aged 25yrs+) with an Educational Attainment of High School Graduate or Equivalent in 2021
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| Rank | Congressional District | Number of People |
|---|---|---|
| 1 | CO Congressional District 3 | 139835 |
| 2 | CO Congressional District 7 | 134309 |
| 3 | CO Congressional District 4 | 129752 |
| 4 | CO Congressional District 5 | 118354 |
| 5 | CO Congressional District 6 | 110351 |
| 6 | CO Congressional District 1 | 98423 |
| 7 | CO Congressional District 2 | 79952 |