This sort of thing never moves much from year to year, but using recent Census data, the Huffington’s Post has a list of the top states in terms of the college education. About 38 percent of U.S. adults have graduated from college. The states with the have the highest proportion of college graduates among populations age 25 to 34 are:
According to the article, technically the “state” with the highest proportion college-educated residents age 25 to 34 is the District of Columbia, in which 63.5 percent of people in that age group have bachelor’s degrees. This, however, is cheating, because, 1) D.C. isn’t really a state. It’s not really even a very large city; it has like 600,000 people in it, and 2) Virtually all of those people earned those college degrees outside of Washington.
The Chronicle of Higher Education has an interesting interactive map of the college educated in the United States.
The loser here is Arkansas, a state in which only 25.9 percent of the population age 25 to 34 has a college diploma. That’s the lowest rate in the nation.