Average GPS coordinates for Umunachi Postcode location: 5.432, 7.208. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Umunachi on map:

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Listing cities & postcodes (2):
>> Imo, 463111 Umunachi, Ahiazu Mbaise, GPS coordinates: 5.54963, 7.27065
>> Imo, 460129 Umunachi, Ngor-Okpala, GPS coordinates: 5.31481, 7.14517