One in seven Americans have signed up for health insurance coverage through Affordable Care Act marketplaces since their 2014 launch, according to data released on Tuesday by the U.S. Department of the Treasury. A total of 49.4 million Americans have signed up for the plans, often referred to as Obamacare, with enrollment reaching a high of 20.8 million people in 2024. Marketplace coverage since 2014 has been higher in states that have not expanded Medicaid programs under the ACA or did so later, the report said.
