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What percentage of American adults are obese by their height and weight?

33.6% of American adults are obese by their height and weight — about 34 in every 100, or 3 in 10. That is the figure published by the National Health Interview Survey for 2025.

Where this number comes from

Survey

National Health Interview Survey

What it measured

Calculated from information that respondents supplied in response to survey questions regarding height and weight. For both men and women, obesity is indicated by body mass index (BMI) of 30.0 or higher. Note that self-reported height and weight may differ from actual measurements.

Population

U.S. adults aged 18 and over

Year

2025

95% confidence interval

32.8% to 34.4%

Work of the U.S. federal government - public domain. See the source data

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