History – During 1980
- History – From 2000
- History – During 1990
- History – During 1980
- History – During 1950~1970
- Before 1950
| May 1, 1982 | Daechang-dong 3ga was merged to Choryang-dong and part of Sujeong-dong was included into Jwacheon 3dong |
|---|---|
| December 1, 1985 | Choryang5dong was merged to Choryang 3dong (19 villages) |
| July 1, 1986 | Part of Choryang 3dong was included into Choryang 1dong |
| January 1, 1987 | Part of Jung-gu Youngju 2dong Mt.1beong-ji was included into Choryand 1 dong |
| May 1, 1988 | Autonomous district was implemented |
| January 1, 1989 | Part of Dongcheon ,Bumcheon-dong, Busan Jingu was included into Dong-gu |
