Michigan has realized substantial increases in families living with basic health insurance coverage since Obamacare took effect in 2013, according to a new report from the Census Bureau.

Michigan ranks eighth among all states, with just a 6.1 percent rate of uninsured overall.

Based on statistics through 2017, the Census Bureau found that nearly every Michigan county now enjoys an uninsured rate of less than 10 percent, though the numbers are much better in the populated regions of the state than in the rural areas of the Upper Peninsula and the Up North area.

In southeast Michigan, the results are dramatic, with reductions of more than half becoming commonplace. In Wayne County the rate of uninsured people plummeted from 15.8 to 6.8 percent. In neighboring Oakland County, the trend shaped up as a decline from 10.7 to 4.9 percent. And in Macomb County, the effects of Obamacare (aka the Affordable Care Act) saw the number of households without insurance coverage drop from 12.5 to 6.4 percent.

Livingston County had the lowest rate of uninsured people in the state, with just 4.1 percent of the populace without health insurance coverage, down more than 50 percent from 8.9 percent in 2013.

In contrast, Mackinac County served as an outlier with the highest percentage of Michigan residents without any health insurance at 11.5 percent. But even that was a significant improvement over 2013 when 20 percent of the county’s population lacked coverage.

The Michigan results were repeated across the nation, with the majority of states, like Michigan, that engaged in the federally funded expansion of Medicaid eligibility posting the best results.

Massachusetts, which established an Obamacare-style insurance marketplace many years ago, had the lowest overall percentage of uninsured residents at 3.3 percent in 2017 and that was down from 4.3 percent in 2013.

Texas had the highest percentage of residents without coverage at 19.4 percent. That was down from 24.8 percent in 2013. But Texas was also home to Gaines County which had the largest percentage of people without health insurance in the nation at 33.7 percent in 2017. That was just 0.5 percentage points lower than in 2013.

Overall, more than one-third of all counties in the U.S. reported uninsured rates below 10% in 2017, after the tax subsidies under the Affordable Care Act (ACA) for low-income families kicked in.

Massachusetts, Illinois, New York, Kentucky and West Virginia had the lowest uninsured rates, county-by-county.

Texas, Florida, Georgia, South Carolina and Wyoming all had numerous counties that exceeded the level of 10 percent uninsured.

The Census Bureau reports that the year before the ACA took effect, only 130 U.S. counties of more than 3,000 had uninsurance rates below 10 percent. The newest stats show that more than 38 percent of all counties nationwide have estimated uninsured rates below 10 percent.