Prosečne GPS koordinate za poštanski broj 81991: 25.75, -108.083
Spisak gradova:
>> Llano Grande 81991, Sinaloa, Sinaloa, GPS koordinate: 25.75,-108.0833
>> Nacaveba 81991, Sinaloa, Sinaloa, GPS koordinate: 25.75,-108.0833
Spisak gradova:
>> Llano Grande 81991, Sinaloa, Sinaloa, GPS koordinate: 25.75,-108.0833
>> Nacaveba 81991, Sinaloa, Sinaloa, GPS koordinate: 25.75,-108.0833