Average GPS coordinates for Idem Postcode location: 5.15, 7.693. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Idem on map:

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Listing cities & postcodes (2):
>> Akwa Ibom, 531111 Idem, Ini-Ikono, GPS coordinates: 5.40845, 7.75840
>> Akwa Ibom, 533102 Idem, Ukanafun, GPS coordinates: 4.89141, 7.62723