The List: The Happiest US Cities Based on Tweets

The happiest city is Napa, Calif., at least according to an analysis of tweets on Twitter.

In a new study, University of Vermont mathematician Lewis Mitchell and his colleagues created a tool called the "hedonmeter," which collected 10 million tweets that had location data attached from 373 urban areas in the United States — nearly 10 percent of all of Twitter's 2011 posts with location data. They then broke them into individual words.

The 15 Happiest Cities in the United States:

Napa, Calif.

Longmont, Colo.

San Clemente, Calif.

Santa Fe, N.M.

Santa Cruz, Calif.

Green Bay, Wis.

Santa Rosa, Calif.

Simi Valley, Calif.

Lafayette, Colo.

Asheville, N.C.

Spokane, Wash.

Boulder, Colo.

Fort Collins, Colo.

Santa Barbara, Calif.

San Jose, Calif.

For the rest of the story: http://www.livescience.com/27357-tweets-reveal-happiest-us-cities-sidebar.html