Average GPS coordinates for Umuike Postcode location: 6.039, 7.095. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Umuike on map:

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Listing cities & postcodes (2):
>> Anambra, 422119 Umuike, Aguata, GPS coordinates: 5.97619, 7.04597
>> Anambra, 423199 Umuike, Orumba North, GPS coordinates: 6.10274, 7.14437