¡Ý United Shilla Dynasty

- 475 (Goguryeo Dynasty): Yulmok-gun

- 757 (United Shilla Dynasty): Yuljin-gun

- 940 (Goryeo Dynasty): Gwaju-gun

¡Ý Goryeo¡¤Joseon Dynasties

- 940 (Goryeo Dynasty): Gwaju-gun

- 1413 (Joseon Dynasty): Gwacheon-hyeon

¡Ý Present Era

- May 1895: Nam-myeon, Gwacheon-gun

- March 1, 1914 : Nam-myeon, Siheung-gun

- May 1, 1979 : Gunpo-eup, Siheung-gun

- January 1, 1989 : Promotion to Gunpo City

- December 26, 1994 : Incorporation of 4 ris in Banwol-myeon, Hwaseong-gun (Dundae, Sokdal, Daeyami, Domagyo

 

Gunpo City proceeded without any changes in its administrative districts or designation through the rule of Japanese Imperialism and even after the establishment of the nation since it became Nam-myeon, Siheung-gun on March 1, 1914 , but was promoted to Gunpo-eup, Siheung-gun on May 1, 1979 according to the Presidential Decree No. 9409 promulgated on April 7 of the same year.

Thereafter, the government separated Siheung-gun and promoted Gunpo-eup to Gunpo City on January 1, 1989 based on the Law No. 4050 (promulgated on December 31, 1988 ) for efficient regional management as the demand for administration increased day by day.