Average GPS coordinates for El Indio Postcode location: 28.533, -100.342. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). El Indio on map:

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Listing cities & postcodes (1):
>> Texas, 78860 El Indio, Maverick, GPS coordinates: 28.5331,-100.342