Prosečne GPS koordinate za poštanski broj 18901: 40.305, -75.149
Spisak gradova:
>> Doylestown 18901, Pennsylvania, Bucks, GPS koordinate: 40.3054,-75.1489
Spisak gradova:
>> Doylestown 18901, Pennsylvania, Bucks, GPS koordinate: 40.3054,-75.1489