[smokingfrog]

The population of Seoul is about 10 million.

[2ndDivisionVet]

Metro is 25,600,000.

[ChildOfThe60s]

Both are correct in a way.

“The population of Seoul in 2016 is estimated at 10.29 million, although this is just the population of the Special City, which has a density of about 17,000 people per square kilometer (45,000/square mile). The sprawling metropolitan area is much larger at 25.6 million.”

[bert]

——The population of Seoul is about 10 million.-—

The population of Seoul Metro is 25 million