Lauttasaari (Finnish: [ˈlɑu̯tːɑˌsɑːri]; Swedish: Drumsö) is an island in Helsinki, Finland, about 3 kilometres (1.9 mi) west of the city centre. Together with some surrounding unpopulated small islands, Lauttasaari is also a district of Helsinki. With 23,226 residents as of 2017, the island is Finland's second largest by population, after Fasta Åland. Its land area is 3.85 km2.