The postal code of Ōyasawa which is listed in our database is 030-0123. Our records often include geographical coordinates of Ōyasawa and it's corresponding postal code. In the result box below, you can find the postal code of Ōyasawa 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 Ōyasawa may also be present such as geographical data, historical records or news about Ōyasawa and 030-0123 in general.