Iowa residents use HealthCare.gov, the federal marketplace, to shop for individual and family health insurance, since the state has not created its own exchange platform.
Iowa expanded Medicaid under the ACA, so adults earning up to 138% of the federal poverty level generally qualify for the Iowa Health and Wellness Plan, the state's Medicaid expansion program, rather than needing a subsidized marketplace plan.
Iowa's individual insurance market has seen insurer participation shift over the years, so it's worth checking which companies are actually offering plans in a given county before enrollment, since choices can be more limited in some rural areas than in cities like Des Moines or Cedar Rapids.