The postal code of Riihikoski which is listed in our database is 21870. Our records often include geographical coordinates of Riihikoski and it's corresponding postal code. In the result box below, you can find the postal code of Riihikoski and it's location on the map if we have the location information available. Every postal code is also located in a region or a district, in case we know the district or region of the city it will too be listed in the results. All kinds of additional information we have on Riihikoski may also be present such as geographical data, historical records or news about Riihikoski and 21870 in general.