En español | Most Coloradans are eligible to buy health insurance through Connect for Health Colorado, the state’s Affordable Care Act (ACA) marketplace, during open enrollment, which runs from Nov. 1, 2022, through Jan. 15, 2023. Residents who experience a qualifying life event, such as a marriage, divorce, the birth of a child, a move or lost health insurance, may be eligible to buy or change coverage outside the open enrollment period.