Well, with a succesful Allied invasion of Norway combined with German putsch in Finland the Finnish Army fights till the bitter end together with German Army and thus Finland is occupied jointly by US-UK forces in the West and North and Soviet forces in East and South. The dividing line was drawn arbitarily between Kajaani in the Eastern Finland and Pori in Southwest Finland.
As in case of Korea, the US-UK zone (Finnish Republic with capital in Vaasa) was initially the one with lower population and living standards. Thanks to nationalist Socialist tendencies of the People's Republic the Swedish speaking minority was also extradited to Finnish Republic.
Led by President
Pentti Tiusanen the People's Republic of Finland (colloquially South Finland) still survives under direct Russian support. The capital city, Helsinki, sports impressive although unfinished building projects designed to sport national ideology of Juhta (work animal). The population of approximately 2 million tries it's best to survive. People's Republic of Finland frequently challenges the international use of Märket strait between Sweden and Åland, most recent example being mining of North Finnish patrol boat
Tornio with heavy loss of life.