WASHINGTON • A record 16.3 million people sought health insurance through the Affordable Care Act this year, double the number covered when the marketplaces first launched a decade ago, the Biden administration announced Wednesday.

Over 3 million new members joined the marketplace, also known as “Obamacare,” according to the Department of Health and Human Services.

The government worked with nonprofit groups and invested in program specialists who helped to sign people up in low-income, immigrant, Black and Latino communities to enroll more people, said Chiquita Brooks-LaSure, administrator of the Centers for Medicare and Medicaid Services.

“We made unprecedented investments to expand our enrollment organization footprint into nearly every county in the country and targeted the hardest to reach communities,” she said.

The boost in enrollment comes as the number of uninsured people is at an all-time low — just 8% of those in the United States remain without coverage.