Yeosu is the town of patriotic loyalty that richly contains the spirit of the admiral Yi Sun Shin who overcame the Japanese invasion of Korea in 1592 and our ancestors who followed him. Yeosu became the current city after the unification through the proposal by citizens of Yeosu-si, Yeocheon-si and Yeocheon gun on April 1, 1998.
2017
- Held Korean Municipalities' EXPO and declared 'the Yeosu manifesto for local decentralization'
2012
- Held Yeosu World EXPO
( May 12- August 12)
1998
- Yeosu-si, Yeocheon-si, and Yeocheon-gun incorporated into the unified city of Yeosu on April 1
1997
- On September 9, surveyed residents' poll on integrating of 3 Yeosu (Raised by the residents)
1986
- Yeocheon District Office of South Jeolla Province upgraded to Yeocheon-si (with 7 dongs)
1980
- Samil-myeon and Dolsan-myeon (townships) upgraded to eup (town)
1976
- Yeocheon District Office of South Jeolla Province opened (Samil-myeon and Ssangbong-myeon in Yeocheon-gun)
1949
- Yeosu-eup upgraded to Yeosu-si with the remaining nine myeon (townships) renamed as Yeocheon-gun; Yeosu Harbor opened
1931
- Yeosu-gun upgraded to Yeosu-eup
1914
- Dolsan-gun merged into Yeosu-gun
1897
- (Joseon Dynasty, 1st year of Gwangmu) Established Yeosu-gun
1896
- (Joseon Dynasty, 1st year of Gyeonyang) Established Dolsan-gun
1479
- (Joseon Dynasty, 10th year of King Seongjong) Established West Jeolla Province Sugunjeoldosayeong (naval base responsible for both East and West Seas)
940
- (Goryeo Dynasty, 23rd year of King Taejo) Reorganized into Yeosu-hyeon and Dolsan-hyeon
757
- (Unified Silla Kingdom, 16th year of King Gyeongdeok) Renamed as Haeeup-hyeon and Yeosan-hyeon
538
- Part of Wonchon-hyeon and Dolsan-hyeon (Baekje Dynasty, 16th year of King Seong)