Average GPS coordinates for San Martin Postcode location: -9.34, -76.739. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). San Martin on map:

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Listing cities & postcodes (4):
>> Huanuco, 10775 San Martin, Huamalíes, GPS coordinates: -9.33183, -76.75557
>> Huanuco, 10660 San Martin, Huamalíes, GPS coordinates: -9.56585, -76.80783
>> Huanuco, 10890 San Martin, Marañón, GPS coordinates: -8.69851, -76.72328
>> Huanuco, 10590 San Martin, Yarowilca, GPS coordinates: -9.76546, -76.66824