The most common Korean word for “currency exchange” is 환전소 (hwanjeonso). There is one more word with a similar meaning — compare them below. 「currency exchange」는 한국어로 환전소.
currency exchange; money exchange
TOPIK 1 · noun
foreign exchange; money exchange
TOPIK 2 · noun
Words and levels: TOPIK I essentials (National Institute of Korean Language standard curriculum, KOGL Type 1) · examples: Cheesepotato