Some 34 million US adults smoke cigarettes, according to a 2017 survey by the US Centers for Disease Control and Prevention.
The 14 per cent cigarette-smoker rate is down from 15.5 percent in 2016.
The current rate marks a 67 per cent decline since 1965, the year the National Health Interview Survey (NHIS) began collecting annual data on smokers, said the CDC report.
The NHIS report also highlighted a significant drop in young adult cigarette smokers in 2017 compared to a year earlier.
About 10 per cent of Americans aged 18-24 smoked cigarettes in 2017, down from 13 per cent in 2016.
The CDC said one in five US adults (47 million people) still use some form of tobacco product -- including cigarettes, cigars, e-cigarettes, hookah pipes or smokeless tobacco -- a rate that has remained steady in recent years.
About 16 million Americans suffer from a smoking-related illness.
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