If you're white, single with no kids and live in the South, chances are good you'll quality for a cost-sharing reduction to help cover the out-of-pocket costs your marketplace health plan.

That's what a study conducted by the Urban Institute and funded by the Robert Wood Johnson Foundation concluded. The foundation looked at who would tend to qualify for these health insurance assistance subsidies, which are to kick in in 2016. The researchers report that, overall, 13.8 million American adults will qualify based on their income, and that nearly half of the residents in southern states and are single individuals without children. Six in 10 in the group are white/non-Hispanic.

Known as CSRs, these subsidies will pay at least part of deductibles, co-pays and co-insurance for those who qualify based on income. Those earning as much as 250 percent of the federal poverty level will quality. Specific income triggers are $29,425 for an individual and $60,625 for a family of four. Eligibility for the premium tax credits goes up to 400 percent of the federal poverty level.