If you equate education with intelligence, then the smartest city in the United States is Seattle - 52.7 percent of its residents age 25 or older have completed a bachelor's degree or higher.
The education rankings were released this month by the U.S. Census Bureau.
My hometown of Raleigh, NC was tied for second with San Francisco, CA. (The presence of the Research Triangle Park and the three major research universities that form the points of the Triangle accounts for the high level of educational attainment in the area.)
My current residence, New York City, came in at #20. If you break it down to just Manhattan, though, we're number one by a wide margin:
America's Smartest Cities (CNNMoney.com)
For Manhattan alone, however - the center of New York's knowledge economy - the percentage of residents with bachelor's degrees is a whopping 57.5, and the figure for advanced degrees is 26.9 percent.