Finland Postal Codes Postal Codes of Finland:Central Finland RegionCentral Ostrobothnia RegionKainuuKanta HameKymenlaaksoLaplandNorth KareliaNorth Ostrobothnia RegionNorthern SavoOstrobothnia RegionPaijanne TavastiaPirkanmaaSatakuntaSouth KareliaSouth Ostrobothnia RegionSouthern SavoniaSouthwest FinlandUusimaa About Finland Capital: Helsinki Currency: Euro (EUR) Languages: Finnish (official) 94.2%, Swedish (official) 5.5%, other (small Sami- and Russian-speaking minoritie Population: 5,244,000 Area: 337,030 KM2