No. 4: Idaho
Strengths: Low crime rate, good weather
Bankrate found much to offer retirees in the Gem State. For starters, Idaho has one of the lowest crime rates in the country, second only to Vermont.
A low cost of living also makes it easy to stretch those retirement dollars, especially when it comes to groceries. In Boise, Idaho, a dozen eggs will cost you only $1.35, compared with the national average of $1.99. Likewise, a half-gallon of milk is $1.72, while the U.S. average is $2.40. Not surprisingly, spuds are a steal in the home of the potato -- 27 percent below the nation's average. Rent is also on the cheaper side, costing about $729.57, 20.5 percent below norm.
And there's no shortage of ways to be one with nature in Idaho -- nearly 70 percent of the state is public land, filled with parks, monuments and preserves.