A study by the University of Minnesota's State Health Access Data Assistance Center found that the number of uninsured Minnesotans fell by 40 percent or around 180,000 people, since September 2013. The number of uninsured Minnesotans went from 445,000 people to 264,500 people (less than 5 percent of the population).

Julie Sonier, SHADAC deputy director, said that the findings are consistent with those that have been seen around the country since the Affordable Care Act was implemented. 

"We know the ACA's impacts will vary by state, and our purpose in doing this analysiss was to examine the impacts on minnesota, in advance of teh first state-level results from surveys, which are not expected until the end of this year at the earliest," Sonier said. 

According to the study, the increase in enrollment in two state health insurance programs, Medical Assistance and MinnesotaCare, was where the primary enrollment increase was seen with a total of 155,000 person increase in the two programs. 

Coverage in private health insurance options, both group and nongroup, also saw a small increase, according to the SHADAC study. 

Access to the new insurance options through the ACA were made available to Minnesotans begining January 1, 2014. 

The study loked at numbers of insured Minnesota residents in September 2013 before the MNsure enrollment began, and looked at the number of people again in May 2014, a month after enrollment ended.