Average GPS coordinates for Centro Postcode location: 17.842, -100.175. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Centro on map:

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Listing cities & postcodes (3):
>> Guerrero, 39106 Centro, Chilpancingo de los Bravo, GPS coordinates: 17.3708,-99.5344
>> Guerrero, 40760 Centro, Zirandaro, GPS coordinates: 18.0542,-100.5083
>> Guerrero, 40890 Centro, Jose Azueta, GPS coordinates: 18.1,-100.4833