The name Jangchung-dong originated from the Jangchungdan that was located in this area. Established in 1900, Jangchungdan was a place where ceremonies honoring loyal subjects and martyrs who sacrificed their lives for the country during the Eulmi Incident (the assassination of Empress Myeongseong) were held. On 1 October 1946, during the process of changing the Japanese-style neighborhood names to ones with deep Korean roots, this entire area was named 'Jangchung-dong'.
"Mapo Information". The chart of Beopjeong-dong assigned by Haengjeong-dong (행정동별 관할 법정동 일람표) (in Korean). Mapo District Official website. Archived from the original on 2007-11-05.