Prosečne GPS koordinate za poštanski broj 17831: 40.834, -76.835
Spisak gradova:
>> Hummels Wharf 17831, Pennsylvania, Snyder, GPS koordinate: 40.8344,-76.8354
Spisak gradova:
>> Hummels Wharf 17831, Pennsylvania, Snyder, GPS koordinate: 40.8344,-76.8354