By the late 18th century, the Forest Finns had become largely assimilated into the Swedish and Norwegian cultures, and their language, a variety of Savonian Finnish, is today extinct, although it survived among a tiny minority until the 20th century.
I slutningen af 1700-tallet var skovfinnerne i høj grad blevet assimileret ind i de svenske og norske kulturer, og deres sprog, en variant af finske Savolax-dialekter, er i dag uddødt, tiltrods for at det overlevede i mindre grupper indtil slutningen af 1900-tallet.