2020's

• Apr. 16, 2020 The Inauguration of the 9th popularly elected Mayor of Jung-gu District

2010's

• Jul. 01, 2018 The Inauguration of the 8th popularly elected Mayor of Jung-gu District
• Jul. 01, 2014 The Inauguration of the 7th popularly elected Mayor of Jung-gu District

2000's

• Jul. 01, 2010The Inauguration of the 6th popularly elected Mayor of Jung-gu District
• Dec. 20, 2007The Inauguration of the 5th popularly elected Mayor of Jung-gu District
• Jul. 01, 2006The Inauguration of the 4th popularly elected Mayor of Jung-gu District
• Jul. 01, 2002The Inauguration of the 3rd popularly elected Mayor of Jung-gu District

1991~2000

• Jan. 01, 1999 Bosu 1-dong and Bosu 2-dong were integrated into Bosu-dong
• Jul. 01, 1998 The Inauguration of the 2nd popularly elected Mayor of Jung-gu District
• Jul. 01, 1995 The Inauguration of the 1st popularly elected Mayor of Jung-gu District
• Jan. 01, 1995 Renamed as Metropolitan City
• Jan. 15, 1995 Opening District Council

1971~1990

• Oct. 21, 1989 Relocation of the public health center (inside the Jung-Gu Office)
• May.15, 1988 Execution of the self-governing system
• Apr. 01, 1988 Moved to the new office building (Present)
• Apr. 01, 1985 Moved to Jung-Gu Office (Provisional)

1951~1970

• Dec. 06, 1964 Built Jung-Gu Office building (Past)
• Jan. 01, 1963 Promoted to the city of Busan under the direct control of the government
• Jan. 01, 1957 Promoted to Jung-Gu (Implementation of Gu System (Ward System)
• Sept. 01, 1951 Jung-Bu branch office

Before 1950

• Aug. 15, 1949 Graded up as Busan City
• Apr. 01, 1914 Renamed as Busan-Bu (Implementation of Bu System)
• Feb. 27, 1876 Busan port opened for international trade
• AD 1547 Dongnae-Bu (King Myeongjong, Joseon dynasty)
• AD 1018 Dongpyeong-hyeon, Yangju (King Hyeonjong, Goryeo dynasty)
• AD 758 Dongpyeong-hyeon, Dongnae-gun (King Gyeongdeok, Silla dynasty)