Average GPS coordinates for Koyama Postcode location: 35.775, 139.895. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Koyama on map:
Listing cities & postcodes (1):
>> Chibaken, 271-0093 Koyama, Matsudoshi, GPS coordinates: 35.7745,139.8948
Listing cities & postcodes (1):
>> Chibaken, 271-0093 Koyama, Matsudoshi, GPS coordinates: 35.7745,139.8948