Average GPS coordinates for Namchi Postcode location: 27.167, 88.35. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Namchi on map:

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Listing cities & postcodes (1):
>> Sikkim, 737126 Namchi, South Sikkim, GPS coordinates: 27.1667,88.35