When it comes to sleep, not all Americans are equal. Some are better rested than others, and a study published in the Sept. 2015 issue of "Sleep Health" suggests geography may play a role in how many Z's you catch nightly.

The study is based on data gathered by the U.S. Centers for Disease Control and Prevention, which surveyed 432,000 Americans.

The findings are a bit counter intuitive. As Christopher Ingraham of The Washington Post notes, the study reveals that it's not residents in bustling metropolises like New York, Los Angeles and Chicago that are the most sleep deprived.

The worst state for sleeping is...

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Ohio - the Buckeye State is also the Bleary-eyed capital of America.

Other restless states include West Virginia, Kentucky, Virginia and Tennessee. Basically, Appalachia is the nexus of insomnia in America.

The best state for sleeping is...

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Hawaii - there's nothing like a lullaby played on a ukulele.

Other well rested states include Arizona, Rhode Island, Connecticut and Vermont.

(These rankings are based on eyeballing this interactive map designed by The Washington Post.)

Some states fall between best and worst: Texas tops the list of the three worst counties for sleep, but it also has another 13 counties listed as the best places to rest in America.

Meanwhile, southern California is much better rested than the north end of the Golden State.

However, the study isn't conclusive. Not enough data was collected from Montana, Alaska and large chunks of the Midwest to rank their counties.

Perhaps they slept through the survey.

h/t The Washington Post