The educational landscape of the United States has undergone significant transformation over the past three decades, with the percentage of individuals 25 and older having earned a bachelor's degree steadily increasing since the 1990s. Nationwide, 20% of those aged at least 25 had a bachelor’s degree in 1990, while in 2021 this figure jumped to 38%. However, educational attainment varies greatly across states. Many states, such as Massachusetts, Maryland, Colorado, New Jersey, and Rhode Island, alongside 15 other states, fall above the national value of 38% in 2021. However, a total of 30 states fall beneath the national value.
Below, Figure 1 maps out this data for select years between 1990 and 2021; clicking on any year beneath the title will adjust the data visualized. Note that all years operate under the same quintile scale, meaning that data points across all years were used to create five equal groupings, each representing a fifth of the data.