Prosečne GPS koordinate za poštanski broj 78491: 21.933, -101.088
Spisak gradova:
>> Francisco I Madero 78491, San Luis Potosi, Villa de Arriaga, GPS koordinate: 21.9333,-101.0881
Spisak gradova:
>> Francisco I Madero 78491, San Luis Potosi, Villa de Arriaga, GPS koordinate: 21.9333,-101.0881