Ancient time:Gapbigocha

AD 475 : Renamed to Hyeolgugun, king Jangsu in Goguryeo dynasty

AD 757 : Renamed to Haegugun, king Gyeongdeok in silla dynasty

AD 844 : Established Hyeongujin, king Munseon in silla

AD 940 : Renamed to Ganghwa-hyeon, king Taejo in Goryeo

AD 1232: Promoted to Ganghwagun, king Gojong in Goryeo

AD 1363: Promoted to Ganghwabu, king Gongmin in Goryeo

AD 1394: Established Ganghwa dohobu, king Taejo in Joseon

AD 1627: Promoted to Ganghwa yusubu, king Injo in Joseon

AD 1895: Renamed to Ganghwagun, king Gojong in Joseon

AD 1896: promoted to Ganghwabu, king Gojong in Joseon

AD 1906: Renmaed to Ganghwagun

AD 1914: Incorporated Gyodonggun to Ganghwagun

AD 1962: Opened Boleumdo office

AD 1973: Promoted Ganghwamyeon to Ganghwaeup

AD 1995: Incorporated Ganghwagun into Incheon metro.city