Also known as 2 Sunset Drive, Corner Lot with Frontage on Both Plum Island Blvd and Sunset Drive, Plum Island crossroads. Your new 4,000 - 5,000 + Sq. Ft. home or Business mere minutes to the Ocean, some of the best Sunsets in the Newburyport area. Flood Elevation Certificate in hand. Plum Island is a barrier island located off the Northeast coast of Massachusetts, North of Cape Ann, approximately 11 miles in length. The island is named for the wild beach plum shrubs that grow on its dunes. Proximity to Downtown Newburyport, Strong Demographics, NOT just a Seasonal Destination.