To be exact, the shortest distance between Korean and Chinese coasts is 200   kilometers and from the southeastern tip of the peninsula, it is also 200   kilometers away to the nearest point on the Japanese coast. 
The Korean   peninsula is roughly 1,030 km (612 miles) long and 175 km (105 miles) wide at   its narrowest point. The land area is 99,200 sq / km (38,301 square miles), and   it has a population of 48.2 million people (2004).
Because of its unique   geographical location, this makes Korea very viable piece of land and an   international hub of Asia. Capital Pyeongyang (Special  District)
Area 122,762 ㎢ 
Climate Average temperature: 9.3 ℃, Average rainfall: 826 ㎜ 
Population about 22,600,000 (2002)
Per Capita GDP $706 (2002)
Provinces 
4 cities (under special district control),
9 provinces, 24 cities and 145 districts
Government
A Republic : the Supreme People's Assembly is the governing legislative branch
Economy 
Agriculture/Fishing 30.4%, 
Mining and Manufacturing 26%,
Service 31.8%, 
Construction 7%, 
Utilities 4.8% (2001)
International Airport 
Pyeongyang International Airport
East coast (Cheongjin, Heungnam, Wonsan)
West coast (Nampo, Songrim, Haeju)
Major Cities 
Pyeongyang, Nampo, Gaeseong, Weonsan,   Hamheung, Sinuiju
   South Korea Tourism