Average GPS coordinates for Merbok Postcode location: 5.725, 100.397. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Merbok on map:

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Listing cities & postcodes (3):
>> Kedah, 08400 Merbok, GPS coordinates: 5.7262,100.4529
>> Kedah, 08407 Merbok, GPS coordinates: 5.7246,100.3688
>> Kedah, 08409 Merbok, GPS coordinates: 5.7246,100.3688