Average GPS coordinates for Martoba Postcode location: 2.986, 99.084. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Martoba on map:

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Listing cities & postcodes (2):
>> North Sumatra, 21138 Martoba, Pematang Siantar, GPS coordinates: 2.9861,99.0843
>> North Sumatra, 21143 Martoba, Pematang Siantar, GPS coordinates: 2.98603,99.08423