(Undated)  --  A new study by financial-assistance website WalletHub.com shows Portland is rated near average among the places considered the happiest in which to live.  The analysis aimed to determine which among 150 of the largest U.S. cities is home to the happiest people, by examining each city based on 30 key happiness indicators.  Portland is ranked 59th, getting average scores in emotional & physical well-being and community & environment, but scoring high in the category of income & employment.  Fremont, California tops the WalletHub list of happiest places, and Seattle is 21st.