Least educated, US counties · 1990
US counties with the smallest share of adults 25+ holding a bachelor's degree or higher (1990 ACS). Morgan County, Tennessee leads at 3.7%. 3,122 counties qualify in total. Tennessee carries 5 of the top 25 entries. The median across all 3,122 is 11.8%.
Flip the list · Most educated, US counties →UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS
Frequently asked
Which county has the lowest bachelor's degree or higher?
Morgan County, Tennessee ranks #1 with 3.7% (1990 Decennial Census).
What are the top 5 counties by bachelor's degree or higher?
Morgan County, Tennessee, Menominee County, Wisconsin, Loving County, Texas, Van Buren County, Tennessee, Buffalo County, South Dakota.
How many counties are in this ranking?
3,122 counties qualify after filtering for population minimums and data availability. The ranking covers 1990 Decennial Census data.
How is bachelor's degree or higher measured?
Share of adults 25+ holding a bachelor's degree or higher. Source: US Census Bureau, 1990 Decennial Census.