Average GPS coordinates for Nagano Postcode location: 35.116, 134.799. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Nagano on map:

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Listing cities & postcodes (3):
>> Hyougoken, 667-0145 Nagano, Yabugunyabuchou, GPS coordinates: 35.2858,134.7586
>> Hyougoken, 669-3126 Nagano, Hikamigunsannanchou, GPS coordinates: 35.0815,135.0475
>> Hyougoken, 671-2421 Nagano, Shisougunyasutomichou, GPS coordinates: 34.9819,134.5898