Lohja sub-region was a subdivision of Uusimaa and one of the sub-regions of Finland. The sub-region was abolished in 2009 and merged into the Helsinki sub-region.
Municipalities Coat of armsMunicipalityKarjalohja (municipality)Karkkila (city)Lohja (city)Nummi-Pusula (municipality)Sammatti (municipality)Vihti (municipality)
History January 1, 1997 the city of Lohja and the Lohja municipality were merged. January 1, 2009 Sammatti is merged into Lohja.
After the abolition January 1, 2013 Nummi-Pusula and Karjalohja were merged into Lohja.
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