Vermont has the fewest ASCs of any state, according to the most recent data from CMS.
Here are the 15 states with the fewest ASCs:
Vermont: 2
West Virginia: 8
North Dakota: 13
Rhode Island: 14
Maine: 15
South Dakota: 15
Alaska: 18
Wyoming: 20
New Mexico: 20
Montana: 20
Delaware: 21
Hawaii: 22
New Hampshire: 28
Iowa: 30
Kentucky: 37
Oklahoma: 39