Koijärvi, Finland

Koijärvi is a former municipality of Finland in the former Häme Province, now in Tavastia Proper. It was split between Forssa and Urjala in 1969, most of the land was given to Forssa. The Koijärvi municipality was dissolved in 1969. Most of it, including Kojo, was transferred to Forssa in the south, while small portions of the north were given to Urjala.