Average GPS coordinates for Umuchi Postcode location: 5.602, 6.983. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Umuchi on map:

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Listing cities & postcodes (2):
>> Imo, 461103 Umuchi, Ikeduru, GPS coordinates: 5.54823, 7.15710
>> Imo, 464103 Umuchi, Oguta, GPS coordinates: 5.65598, 6.80949