Korean is the official language of both North and South Korea , and ( along with Mandarin ) of Yanbian Korean Autonomous Prefecture in the Manchuria area of China . 
 Thank you for all the great information 
 Can you please tell me more? 
 You are welcome, glad I could help! 
 Do you have any info on the demographic?
Korean is the official language of both North and South Korea , and ( along with Mandarin ) of Yanbian Korean Autonomous Prefecture in the Manchuria area of China .