Average GPS coordinates for 23 de Marzo Postcode location: 29.725, -111.275. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). 23 de Marzo on map:

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Listing cities & postcodes (1):
>> Sonora, 85465 23 de Marzo, Guaymas, Guaymas (heroica Guaymas), GPS coordinates: 29.725,-111.275