America's 10 Least Brainy Cities: Portfolio Study

Bad news for Merced, Calif. -- according to a report released by Portfolio this week, Merced placed last in 200 cities ranked according to "brainpower."

To compile their list, Portfolio used data from the American Community Survey to correlate average adult earnings with level of educational attainment. Merced's low rates in both categories produced an aggregate score of -2.558 (cities with performance rates below the national average were given negative scores.) Check out Portfolio for more on their methodology).

Below, the ten least brainy cities in America. Portfolio has the full list (PDF).

Are you surprised to see these locales at the bottom of the list? Let us know what you think in the comments section.