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Which 10 states are the least prepared for retirement?

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10 states the least prepared for retirement

No wonder retirees tend to cluster in states with low costs of living.

Financial experts often recommend that retirees aim to live off of 70 to 80 percent of their pre-retirement salary. But that's a benchmark that residents in only one state—Nevadaand Washington, D.C., are surpassing, according to a new study from based on Census Bureau data.

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Nationwide, looking at median incomes for working Americans and retirees, residents age 65 and older have a wage replacement ratio of 59.63 percent. They're living on an average income of $37,847. That's a tight budget, especially given higher costs in retirement for health care, said Mike Sante, managing editor of "Some of them are struggling with some of the basic necessities of life," he said.

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These 10 states are the least prepared when it comes to retirees having enough savings to replace their pre-retirement income.

—By CNBC's Kelli B. Grant
Posted 9 Oct. 2014

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