Gjennomsnittlig GPS-koordinater for postnummer 21144: 2.957, 99.065
Notering byer:
>> Melayu 21144, North Sumatra, Pematang Siantar, GPS-koordinater: 2.95699,99.06473
Notering byer:
>> Melayu 21144, North Sumatra, Pematang Siantar, GPS-koordinater: 2.95699,99.06473