A Closer Look at 2024 ACA Enrollment: Another Year of Record Signups

More than 21.4 million people have signed up or were automatically re-enrolled in Affordable Care Act marketplace coverage during the 2024 open enrollment period, a 31% increase compared to 2023 OEP, according to CMS.

About 16.4 million people enrolled through HealthCare.gov in the 32 states that use that platform, and another 5.1 million enrolled across 18 states and the District of Columbia, which use their own marketplaces. More than 5.2 million people signed up for marketplace coverage for the first time, a 41% increase compared to 3.7 million during the 2023 OEP.

Every state except Maine saw membership growth in 2024, ranging from 0.2% in the District of Columbia to 80.2% in West Virginia. From 2023 to 2024, 44 of the 51 states reported signup increases of at least 10%, and seven states saw surges of more than 50%. Compared to 2021, marketplace enrollment increased over 150% in six states: Georgia, Louisiana, Mississippi, Tennessee, Texas and West Virginia.