1968. 01.

Nam-gu was created in accordance with the District System Law, 1919 (proclaimed on March 30, 1967)
Ongnyeon-dong, Gwangyo-dong, Munhak-dong, Seonhak-dong, Yeonsu-dong, Cheonghak-dong, Dongchun-dong

1977. 05. 10

The names of administrative districts were changed in accordance with Municipal Ordinance 1075 (proclaimed on April 18, 1977)
Changed from Namchon and Seonhak-dong to Seonhak-dong
Changed from Yeonsu and Cheonghak –dong to Yeonsu–dong

1981. 07. 01

Upgraded into a direct-controlled municipality in accordance with the Law, 3424 (proclaimed on April 13, 1981)

1988. 01. 01

Namdong-gu was separated from Nam-gu in accordance with Presidential Decree 12376 (proclaimed on December 31, 1987)
Namchon-dong, a district under jurisdiction of Seonhak-dong was merged with Namdong-gu

1994. 07. 01

Administrative districts were formed in accordance with Nam-gu Ordinance 323 (proclaimed on July 1, 1994)
From Yeonsu –dong → to Yeonsu 1-dong, Yeonsu 2-dong, and Cheonghak-dong

1995. 03. 01

Separated Yeonsu-gu from Nam-gu in accordance with the Law, 4802 (proclaimed on December 16, 1994)
Separated 2 administrative districts in accordance with the Nam-gu Ordinance, 343 (proclaimed on March 1, 1995)
Yeonsu 1-dong → Yeonsu 1-dong, Yeonsu 3-dong
Dongchun-dong → Dongchun 1-dong , Dongchun 2-dong

1996. 01. 01

Divided an administrative district in accordance with District Ordinance 107
Dongchun 2-dong → Dongchun 2-dong, Cheongnyang-dong

2003. 03. 01

Divided an administrative district in accordance with District Ordinance 107
Dongchun 2-dong → Dongchun 2-dong, Cheongnyang-dong

2003. 12. 18

Changed the name of an administrative district in accordance with District Ordinance 419
Cheongnyang-dong → Dongchun 3-dong

2007. 01. 01

Divided an administrative district in accordance with District Ordinance 532
Dongchun 2-dong → Dongchun 2-dong, Songdo-dong

2012. 01. 01

Divided an administrative district in accordance with District Ordinance 726
Songdo-dong → Songdo 1-dong, Songdo 2-dong

2014. 09. 24

Divided an administrative district in accordance with District Ordinance 849
Songdo 1-dong → Songdo 1-dong, Songdo 3-dong

2019. 01. 01

Divided an administrative district in accordance with District Ordinance 1119
Songdo 2-dong → Songdo 2-dong, Songdo 4-dong