Population without Health Insurance
Medicaid Program in US is a shared responsibility between the Federal and state governments, with lots of variation across states on eligibility criteria and associated benefits.
The Economist (08/30) has a nice chart on the percentage of non-senior population (age under 65s) without health insurance in the states. (Americans ages 65 or older will be covered by a different program, Medicare.)
Massachusetts has the country's lowest rate of uninsured, at just 5.2%. At about 10%, Minnesota also belongs to the lowest group. In contrast, in Texas the uninsured rate is 26.3%. The sticking difference highlights the fact that the states vary significantly across service levels and spending priorities.