Little Deer Isle is an island in Penobscot Bay, lying just north of the town (and island) of Deer Isle, of which it is a part. The island is served by Maine State Route 15 via the Deer Isle Bridge. The north end of the island is called Eggemoggin and there is a small island with a lighthouse on it at the tip called Pumpkin Island. Little Deer is about 4 miles long and connects to Deer Isle by way of a causeway. There are only about 300 year-round residents of Little Deer, but many more summer residents.