Maryland has around 247,000 residents enrolled in ACA exchange plans, 76% of whom are currently subsidized. I estimate they also have another ~73,000 unsubsidized off-exchange enrollees.
Michigan has around 531,000 residents enrolled in ACA exchange plans, 91% of whom are currently subsidized. I estimate they also have another ~64,000 unsubsidized off-exchange enrollees.
Massachusetts has around 390,000 residents enrolled in ACA exchange plans, 83% of whom are currently subsidized. I estimate they also have another ~27,000 unsubsidized off-exchange enrollees.
Minnesota has around 151,000 residents enrolled in ACA exchange plans, 61% of whom are currently subsidized. I estimate they also have another ~62,000 unsubsidized off-exchange enrollees.
Kansas has around 200,000 residents enrolled in ACA exchange plans, 94% of whom are currently subsidized. I estimate they also have another ~6,000 unsubsidized off-exchange enrollees.
Kentucky has around 97,000 residents enrolled in ACA exchange plans, 86% of whom are currently subsidized. I estimate they also have another ~6,800 unsubsidized off-exchange enrollees.
Indiana has around 359,000 residents enrolled in ACA exchange plans, 90% of whom are currently subsidized. I estimate they also have another ~6,700 unsubsidized off-exchange enrollees
Iowa has around 136,000 residents enrolled in ACA exchange plans, 88% of whom are currently subsidized. I estimate they also have another ~9,600 unsubsidized off-exchange enrollees.
Hawaii has around 26,000 residents enrolled in ACA exchange plans, 83% of whom are currently subsidized. I estimate they also have perhaps another ~1,700 unsubsidized off-exchange enrollees.
Idaho has around 117,000 residents enrolled in ACA exchange plans, 86% of whom are currently subsidized. I estimate they also have another ~9,000 unsubsidized off-exchange enrollees, although the actual rate filings (summarized later in this post) put the off-exchange total at a much higher ~47,000.
Combined, that's 6.2 - 8.0% of their total population.