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Sleep is an important function that allows your body and mind to recharge, allowing you to wake up refreshed and alert. A good night's sleep also helps the body stay healthy and avoid diseases. The brain cannot function properly if it does not get enough sleep.

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Adults between 18 and 64 need seven to nine hours of sleep per night. Adults over 65 need 7-8 hours. Almost half of all Americans⁸ say they feel sleepy during the day between three and seven days per week. 35.2% of all adults in the U.S.⁷report sleeping on average for less than seven hours per night.

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https://www.sleepfoundation.org/how-sleep-works/why-do-we-need-sleep#:~:text=Sleep%20is%20an%20essential%20function,the%20brain%20cannot%20function%20properly.

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Sleep plays an integral role in health. A good night's sleep empowers the body to recover and lets you wake up refreshed and ready to take on the day.

Unfortunately, many people have sleep problems and don't get the rest that they need. Insufficient sleep and poor quality sleep can be due to diverse factors including sleep disorders, medical conditions, and mental health. Sleep issues affect people of all ages, and its impacts can be far-reaching.

While sleep is too complex to sum up with only numbers, reviewing basic facts and figures about sleep can help you understand how sleep works, why it's important, and the depth of the sleep deprivation problem in the United States.

Statistics About How We Sleep

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Statistics About Insufficient Sleep

Almost half of all Americans⁸ say they feel sleepy during the day between three and seven days per week.

35.2% of all adults in the U.S.report sleeping on average for less than seven hours per night.

At 43%, Hawaii has the highest percentage of adults who get seven or fewer hours of sleep per night. South Dakota, at 26%, has the lowest percentage.

Of major cities in the United States, Boulder, Colorado has the lowest percentage of adults who sleep less than seven hours per night, coming in at 24.2%. Camden, New Jersey and Detroit, Michigan tie for the highest rate, with 49.8% of adults in those cities reporting short sleep.

When compared to whites, black adults are almost twice as likely to describe sleeping too little and are 60% more likely to report sleeping too much.

After adjusting for age, insufficient sleep by race and ethnicity shows clear differences with 46.3% of Native Hawaiians/Pacific Islanders, 45.8% of black people, 40.4% of American Indians/Alaska Natives, 37.5% of Asians, 34.5% of Hispanics, and 33.4% of whites reporting getting less than seven hours of sleep.

42.6% of single parents sleep less than seven hours per night compared to 32.7% of adults in two-parent homes and 31% of adults with no children.

32.6% of working adults reported sleeping six or fewer hours per night in 2017-2018, up from 28.4% in 2008-2009.

More than 44% of workers in production-focused industries, such as factory workers and plant operators, report getting seven hours of sleep or less per night.

Active duty service members are 34% more likely to report insufficient sleep than people with no history of military service.

Statistics About Sleep Disorders

People may apply up to 250 pounds of force when grinding their teeth during sleep.

Statistics About Sleep Disruptions

Statistics About Sleep in Children and Teens

Statistics About the Impact of Insufficient Sleep

Statistics About Sleep and Mental Health

Statistics About Sleep Hygiene

Sleep hygiene is a term that includes both the bedroom environment and sleep-related habits. Optimizing sleep hygiene can play an important role in addressing sleep insufficiency.

93% of people⁵⁷ say that a comfortable mattress is important to being able to get quality sleep.

Statistics About Sleep Aids

+69 Sources

National Sleep Foundation. (2020, March 7). The National Sleep Foundation's 2020 Sleep in America® Poll Shows Alarming Level of Sleepiness and Low Levels of Action. Retrieved October 22, 2020, from

National Sleep Foundation. (2012, April 1). There's No Place Like Home for Sleep According to New National Bedroom Poll. Retrieved October 8, 2020, from

National Sleep Foundation. (2012, April 1). Bedroom Poll: Summary of Findings. Retrieved October 22, 2020, from

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Sleep plays an integral role in health. A good night's sleep empowers the body to recover and lets you wake up refreshed and ready to take on the day. Unfortunately, many people have sleep problems and don't get the rest that they need.

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Northamptonshire Healthcare NHS Foundation Trust (NHFT)

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Why is sleep important? - Wellbeing video