Ranking of Washington 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 Washington (aged 25 years and above) who had an educational attainment of High School Graduate or Equivalent was 1,150,293. Among all Washington counties, King County had the highest population (aged 25 years and above) with an educational attainment of High School Graduate or Equivalent (238,797), followed by Pierce County (162,800), and Snohomish County (133,217).

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

You can see similar information for other educational attainments.

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