Average GPS coordinates for Mapna Postcode location: 5.431, 7.101. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Mapna on map:

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Listing cities & postcodes (1):
>> Imo, 460105 Mapna, Owerri North, GPS coordinates: 5.43114, 7.10113