When to use post office in Korean
Korean: 우체국[ u-che-guk ]

When to use it
A post office (우체국) is a place where you send letters, postcards, and packages. You can also buy stamps there. People use this word when talking about mailing something or going there for simple services.
Example sentences
저는 우체국에 가요.
I go to the post office.
우체국에서 편지를 보냈어요.
I sent a letter at the post office.
학교 옆에 우체국이 있어요.
There is a post office next to the school.
엄마랑 우체국에 갔어요.
I went to the post office with my mom.
이 소포를 우체국에서 부칠 거예요.
I will send this package at the post office.
여행 전에 우체국에 들렀어요.
I stopped by the post office before the trip.