7. Vineyard Haven, Mass. 589 households out of 7.995 or 7.4 percent are millionaires.

Vineyard Haven is a town on Martha's Vineyard. This island off the coast of Cape Cod is one of the most desirable summer vacations spots in the Northeast and has long been a favorite of the rich, the famous and the powerful. Real estate prices are exorbitant and in summer the area can get crowded with rich tourists.