Image is a table by SmartAsset titled "Top 50 Places Where Americans Are Happiest."
Each score is measured on a scale of 0 to 100. Underlying metrics are listed below.

Personal Finance: Percent of individuals earning $100,000 or more, cost of living as a percent of income, personal bankruptcy flings and down payment-to-income ratio.
Well-Being: Percent reporting poor mental health days, life expectancy, physical activity rate and percent of adults with health insurance.
Quality of Life: Percent of adults living below poverty-level, marriage rate, commute time (minutes), concentration of dining, bars & entertainment businesses and violent crime rate.