This represents a decline of approximately two-thirds since the CDC began collecting this data in 1965.
"This apparent decline in cigarette smoking is the achievement of a sustained and coordinated effort by the public health community and its many partners," said agency director Dr Robert R. Redfield, in a statement on Thursday. "However, our work is far from over."
The report estimates that 49.1 million US adults, or nearly 1 in 5, used any tobacco product in 2018. Cigarettes were the most common with 13.7%, followed by cigarettes, cigarillos and slightly filtered cigars, which were used by 3.9% of adults.
E-cigarettes are the third most common tobacco product used by adults, at 3.2%. Their use increased by 2.8% in 2017, despite falling a few years earlier. This is partly attributable to the increase in evaporation in young adults from 18 to 24, which jumped from 5.2% in 2017 to 7.6% in 2018.
Those who probably used tobacco products were between 25 and 44; members of certain minority groups, including lesbian, gay and bisexual adults; those living with a disability or serious psychological distress; people in the Middle West or South; and adults earning less than $ 35,000 a year.
The report also found that cigarette smokers were more likely to try to quit in the previous 12 months, and they were more successful.