Gjennomsnittlig GPS-koordinater for postnummer 21381: 3.041, 99.821
Notering byer:
>> Sei Kepayang 21381, North Sumatra, Asahan, GPS-koordinater: 3.04112,99.82117
Notering byer:
>> Sei Kepayang 21381, North Sumatra, Asahan, GPS-koordinater: 3.04112,99.82117