Average GPS coordinates for La Union Postcode location: 20.258, -97.875. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). La Union on map:

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Listing cities & postcodes (3):
>> Puebla, 73241 La Union, Zihuateutla, GPS coordinates: 20.2583,-97.875
>> Puebla, 73904 La Union, Tlatlauquitepec, GPS coordinates: 20.2583,-97.875
>> Puebla, 74874 La Union, Tecomatlan, GPS coordinates: 20.2583,-97.875