Gjennomsnittlig GPS-koordinater for postnummer 21351: 3.041, 99.821
Notering byer:
>> Tanjung Balai 21351, North Sumatra, Asahan, GPS-koordinater: 3.04107,99.82112
Notering byer:
>> Tanjung Balai 21351, North Sumatra, Asahan, GPS-koordinater: 3.04107,99.82112