About 41.9% of U.S. adults had obesity in the CDC’s latest widely cited national estimate for 2017–March 2020, which is more than 100 million adults.

Quick scoop

If you mean adults , the best headline number is about 42%.

A couple of useful caveats

  • That figure is for adults age 20 and over , not the entire population.
  • If you include overweight + obesity , the share is much higher; recent research found roughly three-quarters of U.S. adults were overweight or obese in 2021.

If you want, I can also give you the rate for children , or break it down by state.