Helped by the Nordic Passport Union, Finnish immigration to Sweden was considerable during the 1950s and 1960s.

In the 16th and the 17th century large groups of Savonians moved from Finland to Dalecarlia, Bergslagen and other provinces where their slash and burn cultivation was suitable.

In the 1600s, there were plans to set up a new region Järle län that would have contained most of the Forest Finns.

After 1809, and the loss of the eastern part of Sweden (Finland) to Russia, the Swedish church planned a Finnish-speaking bishopric with Filipstad as seat.

However, after the mid-1800s cultural imperialism and nationalism led to new policies of assimilation and Swedification of the Finnish-speaking population.

Depending on definition they are reported to number to 30,000–90,000 — that is up to 1% of Sweden's population, but the proportion of active Finnish-speakers among them has declined drastically in the last generations, and Finnish is hardly spoken among the youngsters today.

In the Swedish mindset, the term "Sweden Finns" historically denominated primarily the (previously) un-assimilated indigenous minority of ethnic Finns who ended up on the Swedish side of the border when Sweden was partitioned in 1809, after the Finnish War, and the Russian Grand Duchy of Finland was created.

The benefits of being a "minority language" are however limited to Finnish-speakers being able to use Finnish for some communication with local and regional authorities in a small number of communities (Borås, Borlänge, Botkyrka, Degerfors, Enköping, Eskilstuna, Fagersta, Finspång, Gällivare, Gävle, Göteborg, Gislaved, Hällefors, Håbo, Hallstahammar, Haninge, Haparanda, Hofors, Huddinge, Järfälla, Köping, Kalix, Karlskoga, Kiruna, Lindesberg, Ludvika, Luleå, Malmö, Mariestad, Motala, Norrköping, Nykvarn, Olofström, Oxelösund, Pajala, Söderhamn, Södertälje, Sandviken, Sigtuna, Skövde, Skellefteå, Skinnskatteberg, Smedjebacken, Solna, Stockholm, Sundbyberg, Sundsvall, Surahammar, Tierp, Trelleborg, Trollhättan, Trosa, Uddevalla, Umeå, Upplands-Väsby, Uppsala, Västerås, Norrtälje, Upplands-Bro, Älvkarleby, Örebro, Örnsköldsvik, Österåker, Östhammar, Övertorneå) where Finnish immigrants make up a considerable share of the population, but not in the rest of Sweden.