Prosečne GPS koordinate za poštanski broj 21837: 38.486, -75.741
Spisak gradova:
>> Mardela Springs 21837, Maryland, Wicomico, GPS koordinate: 38.4864,-75.7414
Spisak gradova:
>> Mardela Springs 21837, Maryland, Wicomico, GPS koordinate: 38.4864,-75.7414