Provincetown is located at the very tip of Cape Cod, encompassing a total area of − 55% of that, or , is land area, and the remaining water area. Surrounded by water in every direction except due east, the town has of coastal shoreline. Provincetown is bordered to the east by its only neighbor, the town of Truro, and by Provincetown Harbor to the southeast, Cape Cod Bay to the south and west, Massachusetts Bay to the northwest and north, and the Atlantic Ocean to the northeast.