Daegok Station is a station on Seoul Subway Line 3, the Gyeongui–Jungang Line and the Seohae Line. It is located in the city of Goyang, close to Ilsan. It is mainly used as a transfer station between the three lines rather than as an actual enter-and-exit stop, as the station is located in the midst of farmland with very little local resident demand.
It hosted a third line for transfer, as the Seohae Line was built and brought northward on July 1, 2023. This now allows for much faster, direct subway travel between Ilsan, Gimpo Airport, Bucheon, Siheung, and Ansan.