Korea is used interchangeably with South Korea. In the same way the United States of America and America are used interchangeably.

And it's South Korea, not Southkorea if you want to be pedantic.

Off topic, but would be interesting to compare the birthrates in both countries.

You're not going to get good statistical information out of NK; it may not even exist. And it also matters what the death rates and child mortality rates are in a country which apparently has famines. Almost certainly the NK birth rate is higher to compensate.

It took less time in the search to get [0] than for you to type your comment.

> it may not even exist

Why did you even think what NK doesn't have that data?

https://en.wikipedia.org/wiki/Demographics_of_North_Korea

most recent data is from 2008 and still you can't be sure data was not faked since it's a dictatorship (it is considered credible, but there's no way to check)

Actually, it's Republic of Korea.