K230 정자 Jeongja
Suin–Bundang Line's station platform
Korean name
Hangul	정자역
Hanja	亭子驛
Revised Romanization	Jeongja-yeok
McCune–Reischauer	Chŏngja-yŏk
General information
Location	333 Seongnamdaero Jiha, Bundang-gu, Seongnam-si, Gyeonggi-do[1]
Operated by	Korail Shinbundang Railroad Corporation
Line(s)	Suin–Bundang Line      Shinbundang Line
Platforms	4
Tracks	4
Construction
Structure type	Underground
Key dates
September 1, 1994 (1994-09-01)[1]	Suin–Bundang Line opened
October 28, 2011[1]	Shinbundang Line opened

Jeongja Station (formerly Baekgung station) is a station on the Suin–Bundang Line and the Shinbundang Line, an express subway in South Korea.

It was the southern terminus of the Shinbundang Line, between October 2011 and January 2016, when the Shinbundang Line extended to Gwanggyo station. However, it still exists as a divide in terms of fare since riders need to pay an extra charge of 300 won (on top of the 900 won charge of using the Shinbundang Line) when crossing this station, due to the owners of Phase 1 and 2 being different. This rule only applies to the Shinbundang Line - Riders of the Bundang Line pay the normal minimum fare of 1,250 won.

• 1 September 1994: Railway line from Suseo station to Ori station started to operate. This station was named Baekgung station.^[1]
• 25 September 2002: After Baekgung-dong merged with Jeongja-dong, this station was renamed to Jeongja station.^[1]
• 28 October 2011: The Shinbundang Line opens making Jeongja a transfer station and a terminal station of this line.^[1]
• 30 January 2016: The Shinbundang Line opens its southern extension to Gwanggyo station, thus ending its terminus status.^[1]

37°21′58.60″N 127°06′29.24″E / 37.3662778°N 127.1081222°E / 37.3662778; 127.1081222