Prosečne GPS koordinate za poštanski broj 57765: 44.59, -102.787
Spisak gradova:
>> Opal 57765, South Dakota, Meade, GPS koordinate: 44.5898,-102.7872
Spisak gradova:
>> Opal 57765, South Dakota, Meade, GPS koordinate: 44.5898,-102.7872