|This article may be expanded with text translated from the corresponding article in the Korean Wikipedia. (July 2012)|
|— Municipal City —|
|• Revised Romanization||Seongnam-si|
|Bundang district of Seongnam|
|Administrative divisions||3 gu, 44 dong|
|• Total||141.70 km2 (54.71 sq mi)|
|• Density||7,032.10/km2 (18,213.1/sq mi)|
Seongnam is the second largest city in South Korea's Gyeonggi Province after Suwon and the 10th largest city in the country. Its population is approximately one million. Seongnam is a satellite city of Seoul. It is largely a residential city located immediately southeast of Seoul and belongs to the Seoul National Capital Area.
Seongnam, the first planned city in Korea's history, was conceived during the era of President Park Chung-Hee for the purpose of industrializing the nation by concentrating electronic, textile, and petrochemical facilities there during the 1970s and 1980s. The city featured a network of roads, to Seoul and other major cities, from the early 1970s on. Today, Seongnam has merged with the metropolitan network of Seoul. Bundang, one of districts in Seongnam, was developed in the 1990s.
To accelerate the dispersion of Seoul's population to its suburbs and relieve the congested Seoul metropolitan area, the Korean government has provided stimulus packages to large public corporations and private companies to be headquartered in the Bundang district. Bundang-gu is now home to prominent companies such as KT (formerly Korea Telecom), Korea Gas Corporation, KEPCO, and Korea Land Corporation.
In recent years, a movement to have Seongnam designated a metropolitan city capable of governing itself has arisen.
In August 2009, the city of Seongnam decided to merge with the city of Hanam, also in Gyeonggi-do.
|Students per Teacher:||23|
|Number of Cars:||270,289|
Administrative districts 
Seongnam is divided into 3 "gu" (구, "ward"):
- Seongnam Ilhwa Chunma is a Professional Football Club that plays in the K-League. Seongnam Ilhwa Chunma is the most successful club in Korean football, having won a record 7 K-League titles, 2 AFC Champions League titles, 2 FA Cups, 3 League Cups, 1 Korean Super Cup, 1 Asian Super Cup, 1 A3 Champions Cup, 1 Afro-Asian Club Championship, and 1 Asian Challenge Cup. It placed 5th in the IFFHS Asia's Clubs of the 20th Century. Tancheon Sports Complex is home to Seongnam Ilhwa Chunma F.C.
City Problem 
- Seongnam is now the 10th largest city in South Korea, but it was the first city to claim Moratorium in South Korea, because of the building of the new city hall at Yatap-dong.
- The opening of Seoul Metropolitan subway's New Bundang line was delayed for 2 years.
- Bundang Line
- Seoul Metropolitan Subway Line 8
- Sinbundang/DX Line
- Yeoju Line (Predicted to open in 2014)
- (Red Bus)
- 90OO, 93OO, 94OO (OO means another number excl. 01) to Gangnam-gu or Jung-gu, Seoul
- (Green Bus)- Gyeonggi Bus
- Green bus to Seoul, Gwangju, Yongin, western Gyeonggi, National Road
- National Road number 3-Gwangju-Yatap-Sangdaewon-Seongnam IC-Gacheon University Station-Seoul
- Seoul Ring Expressway (road number 100)
- Gyeongbu Expressway (road number 1)
- Yongin-Seoul Expressway (road number 171)
- Bundang-Suseo City Road (road number 81)
- Bundang-Naegok City Road (road number 81)
Sister Cities & Friendly Cities 
- Piracicaba, Brazil (May 28, 1986)
- Aurora, Colorado, United States (July 27, 1992)
- Shenyang, China (August 31, 1998)
- Ekaterinburg, Russia (May 23, 2008)
- Changchun, China (September 15, 2009)
- Namangan, Uzbekistan (September 22, 2009)
- Ohrid, Macedonia
See also 
- List of cities in South Korea
- Geography of South Korea
- Seoul National Capital Area
- Bundang Line
- Sinbundang Line
- Seongnam Central Library