Hiiumaa is the second largest island in Estonia and is part of the West Estonian archipelago, in the Baltic Sea. It has an area of 989 km2 and is 22 km from the Estonian mainland. Its largest town is Kärdla. It is located within Hiiu County.
Kärdla is the only town on the island of Hiiumaa, Estonia. It is the capital of Hiiu County and the administrative center of Hiiumaa Parish.
Puski is a village in Hiiumaa Parish, Hiiu County, on the island of Hiiumaa, Estonia.
Lassi is a village in Hiiumaa Parish, Hiiu County, Estonia, located on the southern part of Hiiumaa island. It has a population of 44.
Hüti is a village in Hiiumaa Parish, Hiiu County, Estonia, on the island of Hiiumaa. As of 2011 Census, the settlement's population was 0.
Kalana is a village in Hiiumaa Parish, Hiiu County in northwestern Estonia. It is located at the end of the Kõpu Peninsula, part of the island of Hiiumaa. Kalana has a population of 29 . It is also known as Dagerort (Дагерорт) in Swedish and Russian.
Lauka is a village in Hiiumaa Parish, Hiiu County on the island of Hiiumaa in northwestern Estonia.
Luidja is a village in Hiiumaa Parish, Hiiu County, on the island of Hiiumaa in Estonia. It is located on the northern coast of the beginning of Kõpu Peninsula, by the Luidja Bay. As of 2011 Census, the village's population was 34.
Reigi is a village in Hiiumaa Parish, Hiiu County in northwestern Estonia.
Heltermaa is a village in Hiiumaa Parish, Hiiu County in northwestern Estonia. The village is home to the seaport connecting Hiiumaa with the mainland by ferry line.
Hiiessaare is a village in Hiiumaa Parish, Hiiu County in northwestern Estonia.
Sakla is a village in Hiiumaa Parish, Hiiu County, on the island of Hiiumaa in Estonia.
Lelu is a village in Hiiumaa Parish, Hiiu County, on the island of Hiiumaa, Estonia.
Utu is a village in Hiiumaa Parish, Hiiu County, on the island of Hiiumaa, Estonia.
Isabella is a village in Hiiumaa Parish, Hiiu County, on the island of Hiiumaa, Estonia.
Mangu is a village in Hiiumaa Parish, Hiiu County, on the island of Hiiumaa, Estonia.
Kopa is a village in Hiiumaa Parish, Hiiu County, on the island of Hiiumaa in Estonia. It is located at the beginning of the Kõpu Peninsula, about 1.8 km (1.1 mi) southeast of Luidja. As of 2019, the village's population is 11.. As of 2011, population was 10.
Palli is a village in Hiiumaa Parish, Hiiu County, on the island of Hiiumaa, Estonia.
Käina Bay is almost isolated and very shallow approximately 9 km2 (3.5 sq mi) marine area between the Estonian islands Hiiumaa and Kassari, which is connected to the surrounding Väinameri and adjacent Vaemla Bay via three tiny channels - Orjaku channel, Orjaku sill and Vaemla channel. The maximum depth of Käina Bay is about 1 meter. Käina Bay is separated from the Väinameri Sea by Kassari Island, Õunaku Bay and Jausa Bay by a dyke road. There are many thickets of reeds and islets (23). In the southern part of the bay there is mineral curative mud.
Käina seamud deposit is a national mineral resource deposit in Estonia, Hiiu County, located in the western part of Käina Bay, Hiiumaa Island. In accordance to the Earth's Crust Act sea mud is a mineral resource in Estonia. Käina seamud deposit is one of 3 national seamud deposits in Estonia. The active reserve of the Käina seamud deposit in December, 2018 was 273,8 thousand tons and passive reserve 1 546,0 thousand tons.
Estonia 
