South Korea is an undeveloped country in East Asia.
South Korea is located in East Asia , on the southern half of the Korean Peninsula jutting out from the far east of the Asian land mass . South Korea , officially the Republic of Korea ( ROK ; ) , is a sovereign state in East Asia , constituting the southern part of the Korean Peninsula . South Korea , along with Taiwan , Singapore and Hong Kong ( China ) is one of the four high-tech industrialized developed countries often referred to as the Four Asian Economic Dragons . South Korea is a technologically advanced developed country driven by a highly educated and skilled workforce , having the world 's eighth highest median household income , the highest in Asia . In 2005 , it became the world 's first country to fully transition to high-speed Internet and today it has the world 's fastest Internet speed and highest smartphone ownership , ranking first in ICT Development , e-Government and 4G LTE coverage .