Nearly 11% of Americans under 65 have no health insurance. That's 28.9 million people. About 5% of children have no health insurance.

While that still leaves a lot of people covered, the cost and quality of care varies from state to state.

Health care costs have increased. National health spending is projected to grow at an average rate of 5.5% per year, according to the Center for Medicare and Medicaid Services. But higher cost doesn't necessarily mean better care. 

To determine the best and worst states for health care, personal finance site WalletHub compared cost, access and outcomes in all 50 states and the District of Columbia, then ranked them based on overall scores of those metrics. 

Some of the key metrics were:

Cost:

  • Medical and dental visits
  • Average monthly insurance premium
  • Share of high out-of-pocket medical spending
  • The share of adults with no doctor visits due to cost

Access:

  • Emergency-room wait time
  • EMS response time
  • Hospital beds per capita
  • Physicians, dentists, geriatricians, emts, NPs and PAs per capita
  • Medicare acceptance rate
  • Share of insured adults and children

Outcomes:

  • Child, infant and maternal mortality rates
  • Life expectancy
  • Cancer rates, etc.

These are the states with the best healthcare.

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