Seo District, Incheon

Seo
Seo
Autonomous District
	Yeongjong Bridge
	Flag
	Coordinates: 37°33′N 126°41′E / 37.55°N 126.68°E
Country	South Korea
Region	Sudogwon
Provincial level	Incheon
Area
• Total	137.12 km2 (52.94 sq mi)
Population (September 2024)
• Total	631,652
• Density	4,606.6/km2 (11,931/sq mi)
• Dialect	Seoul
Website	Seo District Office
Korean name
Hangul	서구
Hanja	西區
RR	Seo-gu
MR	Sŏ-gu

Seo District (Korean: 서구; lit. 'West District') was the largest district in Incheon, South Korea. It was established in 1988 and then made defunct on July 1, 2026. Its former area was split into Seohae District and Geomdan District.

It had an area 111.2 square kilometres (42.9 sq mi), and it had the largest area of farmland in Incheon. Before Seo District was part of Buk District. In 1988, a part of the ward was separated to form the district.

History

Before formation

1413: Seokgot-myeon, Mowolgot-myeon, Bupyeongdoho-bu
1895: Seokgot-myeon, Mowolgot-myeon, Bupyeong-gun, Incheon-bu
1896: Seokgot-myeon, Mowolgot-myeon, Bupyeong-gun, Gyeonggi-do
1914: Seogot-myeon, Bucheon-gun
April 1, 1940: Included in Incheon-bu
August 15, 1949: Seogot Branch, Incheon
January 1, 1968: Segot Branch, Buk-gu, Incheon
July 1, 1981: Seogot Branch, Buk-gu, Incheon Direct Governing City

After formation

January 1, 1988: Part of Buk-gu absorbed by Seo-gu
March 1, 1995: Annex of Geomdan-myeon, Gimpo-gun, Gyeonggi-do.
January 1, 2002: Division of Geomdan-dong into Geomdan-1-dong and Geomdan-2-dong.
September 1, 2005: Sub-division of Geomdan-1-dong and Geomdan-2-dong into Geomdan-3-dong.
September 1, 2006: Geomdan-1-dong sub-divided into Geomdan-1-dong and Geomdan-4-dong.
September 17, 2008: Name change of Bulno-dong to Bullo-dong.
June 10, 2010: Absorption of Cheongna-dong, of parts of Gyeonseo-dong-Yeonhui-dong-Wonchang-dong.
July 9, 2012: Sub-division of Cheongna-dong into Cheongna-1-dong and Cheongna-2-dong.
September 2, 2013: Sub-division of parts of Geomdan-1-dong (Oryu-dong, Wanggil-dong) into Geomdan-5-dong, and transfer of metropolitan area landfill from Geomamgyeongseo-dong to Geomdan-5-dong.
July 1, 2026: Made defunct and split into Seohae District and Geomdan District