MEPS data reports average health insurance premium cost of $6,715 per year (about $560 per month) from 2018 for a single person’s policy. Costs are for employee enrollees. Only three states managed to come in, just barely, under $6,000 for a year for one person: TN, AR and MS. Employee contributions were the lowest in Hawaii at about $63 per month, and in Washington state, at about $80 per month. Employer contributions picked up the rest of the cost. Employees paid on average $159 per month in Massachusetts, the highest contribution. Average single employee contribution in US was about $119 per mo. ($1,427 per year) or 21% of the total premium; employers paid 79% of single coverage premiums on average. Compare how much a month health insurance costs in each state. Benefit coverage varies by state and policy. Kaiser Family Foundation (KFF) prepared the tables using MEPS data (Medical Expenditure Panel Study).