Finström is a municipality located in Åland, an autonomous territory of Finland. It covers a total area of 172.50 square kilometres, with approximately 49.23 square kilometres consisting of water.
The municipality has a population of 2,625 people and maintains a population density of 21.27 inhabitants per square kilometre. It is characterized as unilingually Swedish; among the residents, 88.7% speak Swedish as their first language, while 2.5% speak Finnish.