Gjennomsnittlig GPS-koordinater for postnummer 21312: 2.965, 99.8
Notering byer:
>> Tanjung Balai Kota II 21312, North Sumatra, Tanjung Balai, GPS-koordinater: 2.96509,99.8003
Notering byer:
>> Tanjung Balai Kota II 21312, North Sumatra, Tanjung Balai, GPS-koordinater: 2.96509,99.8003