Why Are Koreans Afraid of the 4th Floor?

One of the funniest questions I get from my students in Boston is this “Why does Korea pretend the 4th floor doesn’t exist?”

Honestly, I used to wonder the same thing when I was little. I remember asking my mom why elevators in Korea sometimes skipped from 3 to F or straight to 5. She explained that many Koreans avoid the number 4 because it sounds like the word for death in Korean. Even as a kid, I thought it was strange and fascinating at the same time.

For many foreigners visiting Korea, this becomes one of those unexpected culture shock moments. At first people assume it’s a mistake. Then they start noticing it everywhere: apartments, hospitals, office buildings, hotels. That’s when they realize it’s intentional.

In Korean, the number 4 is pronounced “sa” (사), and the word for death is also pronounced “sa” (사). Because the two words sound identical, the number became associated with bad luck not only in Korea, but in several East Asian countries including China and Japan.

That’s why many Korean buildings avoid displaying the number 4. Some elevators replace it with “F,” while others skip it completely. Hospitals especially tend to avoid it because of its connection to illness and death.

Most younger Koreans today aren’t actually afraid of the number. At this point, it’s more of a cultural habit that quietly carried into modern life. Living between Korea and Boston made me realize every culture has something similar. In the U.S., many hotels skip the 13th floor too.

What I love about this tiny elevator detail is that it shows how deeply language can shape culture. A simple sound similarity ended up influencing architecture and everyday life for generations.

So the next time you step into an elevator in Korea and see it jump from 3 to F or straight to 5, remember: it’s not just a missing number. It’s a small piece of Korean culture, carrying language, history, and generations of quiet consideration, riding the elevator with you.