(Iowa) — A national personal finance website ranks Iowa among the top 20 happiest states in the U.S. WalletHub conducted a national survey of all 50 states using three key dimensions: Emotional and physical well-being, work environment, and community environment. Iowa came in as the 19th happiest state overall, ranking in the top 10 in terms of low separation and divorce rates, percent of the labor force employed for 15 weeks or longer, and the number of Iowans volunteering statewide. Topping the list is Hawaii, and Louisiana comes in as the least happy state in the country.