Gjennomsnittlig GPS-koordinater for postnummer 21139: 2.957, 99.065
Notering byer:
>> Bah Kapul 21139, North Sumatra, Pematang Siantar, GPS-koordinater: 2.95707,99.0648
Notering byer:
>> Bah Kapul 21139, North Sumatra, Pematang Siantar, GPS-koordinater: 2.95707,99.0648