Why do Koreans ask my age when we first meet?
Mostly because the Korean language needs the answer. How we speak to someone, and what we call them, depends a lot on who is older, so asking your age is really a way of working out how to talk to you. It isn't nosiness, and nobody is ranking you.
Korean has a polite way of speaking, 존댓말 (jondaenmal, polite speech), and a casual one, 반말 (banmal, casual speech). Verb endings change, and so do some everyday words when we talk about older people. Between adults who have just met, polite speech is the safe default. As people get closer, though, age usually decides who can suggest switching to casual speech and which family-style title to use: a younger woman calls an older female friend 언니 (eonni), and a younger man calls an older male friend 형 (hyeong). We explain all of these in our story on oppa, unni, hyung and noona.
That's why even a one-year gap matters, and why being born in the same year, 동갑 (donggap, same age), feels like good news: it often means you can be 친구 (chingu), which in everyday Korean usually means a friend your own age. Many Koreans skip the math and ask for your birth year instead: 몇 년생이세요? (myeon nyeonsaeng-iseyo?, “What year were you born?”). That avoids mix-ups from the old counting system. Since June 28, 2023, official age in Korea has been international age, but some people still mention their traditional “Korean age” out of habit, as we explain in our guide to how Korean age works.
Age also brings small unwritten roles. The older person often pays for the meal or the coffee, and the younger one may set out the spoons and chopsticks or pour the drinks. Not everyone loves this. Many younger Koreans, and some workplaces, prefer to stay polite with everyone or to use a name plus 님 (nim, a polite title) regardless of age. So how quickly the question comes up depends on the person, the generation and the setting.
If someone asks, give your age or just your birth year. Nobody expects a visitor to master honorifics, but don't switch to casual speech just because you turn out to be older; wait until someone says 말 편하게 하세요 (mal pyeonhage haseyo, “feel free to speak casually”). And if you'd rather not share your age, it's fine to laugh it off. Most people won't push.
