Metsämaa was originally a part of the Loimaa parish. The village was first mentioned in 1587 as
Metzänmaa. Its name literally means "forest land", as the area of Metsämaa is more forested in comparison to Loimaa proper. Metsämaa gained chapel rights in 1777 and a church was built in the village. The first chaplain was designated in 1799. In 1914, Metsämaa became an independent parish and municipality. The municipality was consolidated with
Loimaan kunta in 1976. The parish remained independent until 2000. Loimaan kunta was consolidated with the town of
Loimaa in 2005. == Church ==