12. Vermont
Number of millionaire households per 100 households: 5.92
Vermont has the least number of millionaire households out of all the states on our list, amounting to merely 15,435. But with Vermont being the safest state in the country according to 24/7 Wall St, these wealthy citizens have certainly chosen the best state to reside in. Interestingly, along with Vermont, all its neighboring states, i.e Massachusetts, New York and New Hampshire, are also part of this list, proving that this entire area has a high density of millionaires.