Residents are healthy here too, with above-average exercise rates and below-average smoking rates, according to a CDC survey. It's no wonder, thanks to a wealth of green space and sunny weather throughout much of the year.

"We have miles and miles of creek trails for bike riding and jogging and all sorts of other types of physical activities that people do to stay healthy here," said Michelle McGurk, a spokeswoman for Mayor Chuck Reed.

One thing residents do stress about: steep housing costs. The median home price rose to $631,000 in the first quarter of this year, more than four times the national median of $195,000.

10. Sacramento, CA

Zen factor: Shorter work hours, healthy lifestyles

Stress factor: Unemployment

Residents in this capital city take their health seriously, which helps keep medical worries (and bills) at bay.

Less than 14% of residents are smokers, according to CDC surveys, and few residents reported that they were in fair or poor health. Most are physically active as well, perhaps motivated by the city's miles of bike paths, nearby mountains and the plentiful sunshine Sacramento receives throughout the year.

Luckily, workers have time to enjoy the outdoors, too. The metro area has the shortest average work week of all 55 metro areas. Commutes are short, too.

"You can get to and from work with relative ease and without spending literally hours on the road each day," said Sacramento City Manager John Shirey.

So what do residents have to stress about? Unemployment remains stuck at more than 8%, in part due to the local economy's reliance on government and construction jobs, which were both battered during the recession.

Sacramento is attempting to change that with its "Next Economy" plan, which is aimed at diversifying the local economy by attracting new employers in areas such as agricultural sciences and research, Shirey said.