Official minority languages of Sweden
Finnish has been spoken in Sweden ever since the (then provincial) borders were drawn in the 13th century. Sweden has always had a significant migration to and from Finland. As the two languages belong to different language families it is easy to distinguish them, unlike the neighbouring languages Norwegian and Danish. The number of Finnish speakers in Sweden today has been estimated to over 460,000. Even though many current Swedes are of full or mixed Finnish descent, Swedish is the main language in practice for many bilinguals.
Estonian Swedish
Estonian Swedish (, ) describes the eastern dialects of Swedish that were spoken in the formerly Swedish-populated areas of Estonia (locally known as "Aiboland") on the islands of Ormsö (Vormsi), Ösel (Saaremaa), Dagö (Hiiumaa) and Runö (Ruhnu), and the peninsula (former island) of Nuckö (Noarootsi), by the local Estonian Swedes.