The US may only rank number 16 on the World Happiness Report, but it's not short of happy cities. A recent WalletHub study analyzed happiness-related data to determine which American cities host the happiest residents. It found that no city is happier than Fremont, California, which tops the list for the second year in a row. Here are the top ten happiest cities in the US this year: 1, Fremont, California. 2, San Jose, California. 3, Madison, Wisconsin. 4, Overland Park, Kansas. 5, San Francisco, California. 6, Irvine, California. 7, Columbia, Maryland. 8, Sioux Falls, South Dakota. 9, South Burlington, Vermont. 10, Burlington, Vermont