ISO 3166-2:KR is a big fancy list of codes that helps people know where things are located in South Korea. Think of it like a secret code that tells you which part of the country something belongs to.
The letters KR stand for South Korea. Just like how your name tells people who you are, these letters tell people which country we are talking about.
The numbers and letters that come before KR are like a special nickname for each part of the country. For example, if someone says "KR-11," they mean the city of Seoul. If they say "KR-26," they mean the province of Jeju.
This code helps people who live in South Korea or who want to do business there keep track of things like where packages are being shipped, where companies have offices, and where people are traveling to. It's like a really helpful map that fits in your pocket!