두랑산의 성황당 아래 있는 마을이라고 하여 '당밑거리'라 일컫고 한자로 당저가 되었다.
It is called "Dangmitgeori" because it is said to be a village under Seonghwangdang Shrine in Durangsan Mountain, and it has become Dangjeo in Chinese character.