A Korean person may ask your age surprisingly early in a conversation. To many visitors, it feels personal. Usually, though, the question is less about your birth year and more about how the two of you should relate to each other.
Age helps set the social language
Korean has multiple speech levels. When two people meet, age is one clue for deciding whether to use polite speech, when casual speech might be comfortable, and which kinship-style terms could fit the relationship.
This does not mean every older person automatically controls every younger person. Context matters: work position, the setting, closeness, and personality all shape the interaction. Age is simply one of the fastest pieces of information Koreans use to reduce uncertainty.
“What year were you born?” may be the real question
You may hear 몇 년생이에요?—literally, “What birth year are you?” In everyday Korean conversation, birth year can be more useful than a Western-style age because it lets people compare quickly.
몇 살이에요? — How old are you?
몇 년생이에요? — What year were you born?
저는 95년생이에요. — I was born in 1995.
Why it can feel friendlier, not ruder
Once people know where they stand, the conversation can become more relaxed. Two people born in the same year may quickly recognize each other as 동갑 (the same age), which can make switching to casual speech and becoming friendly easier.
Do you have to answer?
No. If you are uncomfortable, you can stay vague or redirect politely. In most casual social situations, however, the question is not intended as a judgment. You can simply give your birth year without explaining anything else.
The modern reality
Not every Korean cares equally about age hierarchy. Younger people, international workplaces, and mixed social groups may handle it loosely. Still, understanding why the question appears helps you read the moment without assuming bad intent.
The short version: When Koreans ask your age, they are often asking, “How should we speak to each other, and what kind of relationship are we building?”