No. 4: Arkansas
Arkansas is certainly easy on the wallet. It's the seventh-cheapest place to live for retirees, according to the Council for Community and Economic Research.
But Arkansas struggled in every other category. It had the third-highest crime rate, the sixth-lowest rating for wellness and the eighth-lowest health quality scores. It also had above-average state and local taxes, with a combined rate of 10.3 percent, according to the Tax Foundation.
It's also one of the most humid states in the country, which can make Arkansas an uncomfortable place to live during the summer.