Ranking of Idaho Counties By Population Aged 25 years and above with an Educational attainment of High School Graduate or Equivalent in 2021 (ACS-5Yrs)

Based on the US Census ACS-5Yrs estimates, in 2021, the population of Idaho (aged 25 years and above) who had an educational attainment of High School Graduate or Equivalent was 314,521. Among all Idaho counties, Ada County had the highest population (aged 25 years and above) with an educational attainment of High School Graduate or Equivalent (68,936), followed by Canyon County (42,714), and Kootenai County (31,689).

The chart below shows the top 10 Idaho counties, and the table below shows the ranking of all Idaho counties.

You can see similar information for other educational attainments.

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