Iejima (伊江島, Iejima), previously romanized in English as Ie Shima, is an island in Okinawa Prefecture, Japan, lying a few kilometers off the Motobu Peninsula on Okinawa Island. The island measures 20 kilometres (12 mi) in circumference and covers 23 square kilometres (8.9 sq mi). As of December 2012 the island had a population of 4,610. Most islanders live in Ie Village, which has a ferry connection with the town Motobu on Okinawa Island. Iejima is generally flat. The most notable geographic feature is a peak called Mount Gusuku (or locally "Tacchu") at a height of 172 meters.