South Korea, officially the Republic of Korea (ROK), is an East Asian nation occupying the southern portion of the Korean Peninsula. It shares a border with North Korea along the Korean Demilitarized Zone and is flanked by the Yellow Sea and the Sea of Japan. South Korea asserts its claim as the sole legitimate government over the entire Korean Peninsula and its adjacent islands. Its population is 51.71 million, with approximately half residing in the Seoul Metropolitan Area, one of the world's largest metropolitan areas. Other prominent cities include Busan, Daegu, and Incheon.
In 1905, The Liancourt Rocks were the first Korean territories to be forcibly colonized by Japan.
In 1919, the March First Movement protests occurred, leading to the foundation of resistance groups in exile.
Despite intentions to liberate a unified peninsula in the 1943 Cairo Declaration.
In 1945, the Korean peninsula was divided, leading to the development of distinct contemporary cultures in South and North Korea.
In May 1948, Syngman Rhee won the first presidential elections of the newly declared Republic of Korea.
In 1948, South Korea's constitution was first promulgated at independence, and the first direct election was held.
In 1948, escalating tensions between the Soviet Union and the United States led to the division of Korea into two political entities: North Korea and South Korea.
On June 25, 1950, North Korea invaded South Korea, sparking the Korean War.
In 1950, a North Korean invasion triggered the Korean War, a major proxy conflict of the Cold War.
In 1950, with the onset of the Korean War, U.S. forces were sent to defend against an invasion from North Korea.
In 1951, the Liancourt Rocks were again returned to Korea along with the rest of its territory with the signing of the Treaty of San Francisco.
In 1953, an armistice was signed, splitting the Korean peninsula along the demilitarized zone; however, South Korea never signed a peace treaty, resulting in the two countries remaining technically at war.
In 1953, the Korean War ended with an armistice but no peace treaty, leading to the ongoing Korean conflict.
In 1960, a student uprising (the "April Revolution") led to the resignation of President Syngman Rhee.
On May 16, 1961, General Park Chung Hee led a coup, breaking a period of political instability.
Since 1962, the EU has been the single largest foreign investor in South Korea.
In 1972, Park extended his rule by creating a new constitution, which gave the president dictatorial powers and permitted him to run for an unlimited number of six-year terms.
In 1979, General Chun Doo-hwan led the coup d'état of December Twelfth.
Park's 17-year tenure ended with his assassination in 1979.
In 1980, martial law was declared for the first time since the 1980 military coup d'état.
Starting in 1980, South Korea recorded the fastest rise in average GDP per capita in the world between 1980 and 1990.
In 1982, the Korea Professional Baseball league, consisting of 10 teams, was established. Also in 1982, at the Baseball Worldcup, Korea won the gold medal.
In 1987, Chun's party announced the June 29 Declaration, including the direct election of the president.
The June Democratic Struggle of 1987 ended authoritarian rule and led to the establishment of the current Sixth Republic in South Korea.
Under the 1987 constitution, South Korea maintains a unitary presidential republic.
In 1988, South Korea hosted the Summer Olympics in Seoul, finishing fourth with 12 gold medals, 10 silver medals, and 11 bronze medals.
In the aftermath of the 1988 Seoul Olympics, South Korea experienced a wide variation of styles in its architectural landscape as the market opened up to foreign architects.
The Olympic Sculpture Garden was established in Seoul in 1988.
Ending in 1990, South Korea recorded the fastest rise in average GDP per capita in the world between 1980 and 1990.
In 1991, South Korea became a member of the United Nations at the same time as North Korea.
South Korea was formally invited to become a member of the United Nations in 1991.
In 1992, the emergence of the pop group Seo Taiji and Boys marked a turning point for South Korean popular music, known as K-pop.
Since 1992, South Korea has sent up 10 satellites using foreign rockets and overseas launch pads.
The 1993 edition of the Whitney Biennial was transposed to Seoul.
The Gwangju Biennale and the Korean Pavilion at the Venice Biennale were created in 1995.
Although South Korea was severely harmed by the 1997 Asian financial crisis, the country managed a rapid recovery and subsequently tripled its GDP.
On February 25, 1998, Kim Dae-jung was sworn in as the eighth president of South Korea.
Since the success of the film Shiri in 1999, the Korean film industry has grown substantially, gaining recognition both nation-wide and across the globe.
In June 2000, a North-South summit took place in Pyongyang.
In 2000, Taekwondo became an official Olympic sport.
Beginning in 2001, South Korea had deployed 24,000 troops in the Middle East region to support the war on terror.
Between 2003 and 2013, EU trade with South Korea has enjoyed an annual average growth rate of 9.8%.
Since 2003, robotics has been included in the list of main national research and development projects.
The Korean Robot Game Festival has been held every year since 2004 to promote science and robot technology.
In 2005, Korea Advanced Institute of Science and Technology (KAIST) developed the world's second walking humanoid robot, HUBO.
In 2005, the first successful cloning of a dog, Snuppy, occurred.
A team in the Korea Institute of Industrial Technology developed the first Korean android, EveR-1 in May 2006.
In 2006, the South Korea national team finished third in the World Baseball Classic.
On January 1, 2007, Ban Ki-moon began his service as UN Secretary-General.
On October 4, 2007, Roh Moo-Hyun and North Korean leader Kim Jong Il signed an eight-point agreement on issues of permanent peace.
In 2007, a conservative government was elected led by President Lee Myung-bak.
In 2007, a free trade agreement known as the Republic of Korea-United States Free Trade Agreement was signed between South Korea and the United States.
In 2007, the cloning of two females of an endangered species of gray wolves by the Seoul National University took place.
South Korea avoided a recession during the global financial crisis of 2007–08.
In April 2008, Yi So-yeon became the first Korean to fly in space, aboard the Russian Soyuz TMA-12.
In 2008, South Korea's economic growth rates reached 2.3% during the Great Recession.
In 2008, South Korea's life expectancy was 79.10 years, ranking 34th in the world.
In the 2008 Summer Olympics, South Korea won the gold medal in baseball.
In June 2009, the first spaceport of South Korea, Naro Space Center, was completed at Goheung, South Jeolla Province.
In November 2009, South Korea joined the OECD Development Assistance Committee.
In 2009, South Korea's economic growth rates reached 0.2% during the Great Recession.
In 2009, the government announced plans to build robot-themed parks in Incheon and Masan.
South Korea's birth rate became the world's lowest in 2009, at an annual rate of approximately 9 births per 1000 people.
The South Korean government blamed North Korea for cyberattacks incidents that occurred in 2009, 2011 and 2012.
Plans of creating English-teaching robot assistants to compensate for the shortage of teachers were announced in February 2010, with the robots being deployed to most preschools and kindergartens by 2013.
In March 2010 the South Korean warship ROKS Cheonan was sunk killing 46 South Korean sailors.
In March 2010, Anyang Halla won their first ever Asia League Ice Hockey title.
In September 2010, the free trade agreement between the European Union and South Korea was approved.
Data released in January 2025 show the number of births in November 2024 was 20,095, a 14.6% increase year-on-year, the highest growth rate since November 2010 (which recorded a 17.5% increase).
In November 2010 Yeonpyeongdo was attacked by a significant North Korean artillery barrage, with 4 people dying.
In November 2010, South Korea hosted the G-20 Summit in Seoul, and concluded a free trade agreement (FTA) with the European Union.
As of 2010, South Korea is the world's fifth-largest nuclear power producer and the third-largest in Asia, supplying 45% of its electricity production.
In 2010, South Korea adopted a new educational program to increase the number of foreign students. The plan included doubling scholarships and reaching 100,000 foreign students.
In 2010, South Korea hosted its first Formula One race at the Korea International Circuit in Yeongam.
In 2010, South Korea spent ₩1.68 trillion in a cost-sharing agreement with the U.S. to provide budgetary support to the U.S. forces in Korea, on top of the ₩29.6 trillion budget for its own military.
In 2010, the Korean National Baseball team won the gold medal at the Asian Games.
Since 2010, about 30,000 foreign-born residents have obtained South Korean citizenship every year.
On July 1, 2011, the free trade agreement between the European Union and South Korea took effect.
On October 12, 2011, the U.S. Congress passed the long-stalled trade agreement with South Korea.
In 2011, the South Korean city of Daegu hosted the IAAF World Championships in Athletics.
The South Korean government blamed North Korea for cyberattacks incidents that occurred in 2009, 2011 and 2012.
On March 15, 2012, the Republic of Korea-United States Free Trade Agreement went into effect.
According to a 2012 survey, 52% of South Koreans identified as "religious," 31% as "not religious," and 15% as "convinced atheists."
Government policy, along with a rebound in marriages delayed by COVID-19, may account for the Korean birth rate increasing in late 2024; total births in the third quarter were up 8% from the same period last year, marking the largest quarterly increase since the third quarter of 2012.
In 2012, K-pop began to make its mark outside of Continental and East Asia following the success of Psy's international music sensation, "Gangnam Style".
In 2012, South Korea elected its first female President, Park Geun-hye.
The South Korean government blamed North Korea for cyberattacks incidents that occurred in 2009, 2011 and 2012.
The renewable portfolio standard program with renewable energy certificates runs from 2012 to 2022.
In January 2013, the launch of Naro-1 was a success, after two previous failed attempts.
Between 2003 and 2013, EU trade with South Korea has enjoyed an annual average growth rate of 9.8%.
Following cyberattacks in the first half of 2013, the South Korean government committed to training 5,000 new cybersecurity experts by 2017.
In 2013, South Korea's total spending for research and development grew to about 3.9% of gross domestic product (GDP).
In 2013, the Korean Grand Prix was held.
Plans of creating English-teaching robot assistants to compensate for the shortage of teachers were announced in February 2010, with the robots being deployed to most preschools and kindergartens by 2013.
A 2014 Euromonitor study found that South Koreans consume the most alcohol on a weekly basis compared to the rest of the world.
From 2014 to 2019, South Korea ranked first among the most innovative countries in the Bloomberg Innovation Index.
In 2014, South Korea was the fifth-largest exporter and seventh-largest importer in the world.
Between 2015 and 2024, Christianity rose from 27.6% to 31%, Buddhism rose from 15.5% to 17%, and the unaffiliated population declined from 56.9% to 51%.
Government policy, along with a rebound in marriages delayed by COVID-19, may account for the Korean birth rate increasing in late 2024; total births in the third quarter were up 8% from the same period last year, marking the largest quarterly increase since the third quarter of 2012 and the first annual rise in total fertility since 2015.
In 2015, South Korea signed a Free Trade Agreement with New Zealand.
In 2015, South Korea spent 5.1% of its GDP on all levels of education, which is roughly 0.8 percentage points above the OECD average of 4.3%.
Starting in November 2016, a series of massive public demonstrations occurred due to accusations of corruption against President Park Geun-hye.
In 2016, Ban Ki-moon's tenure as UN Secretary-General ended.
In 2016, Incheon International Airport served 58 million passengers.
In 2016, South Korea had approximately 1.4 million foreign residents, representing roughly 2.75 percent of the population.
On May 10, 2017, Moon Jae-in of the Democratic Party assumed the presidency.
Following cyberattacks in the first half of 2013, the South Korean government committed to training 5,000 new cybersecurity experts by 2017.
In 2017, South Korea was the world's seventh largest emitter of carbon emissions and the fifth largest emitter per capita.
South Korea dropped to a new global low in fertility in 2017, with fewer than 30,000 births per month.
On February 9, 2018, a summit between the nations' leaders was held during the Korean held Winter Olympics.
In April 2018, Park Geun-hye was sentenced to 24 years in jail because of abuse of power and corruption.
On June 28, 2018, the South Korean Constitutional Court ruled the Military Service Act unconstitutional and ordered the government to accommodate civilian forms of military service for conscientious objectors.
On November 1, 2018, the South Korean Supreme Court legalized conscientious objection as a basis for rejecting compulsory military service.
As of May 2018, see Names of Seoul.
In 2018, Pyeongchang hosted the Winter Olympics.
From 2014 to 2019, South Korea ranked first among the most innovative countries in the Bloomberg Innovation Index.
In 2019, South Korea had a Forest Landscape Integrity Index mean score of 6.02/10, ranking it 87th globally out of 172 countries.
In 2019, more than 17 million foreign tourists visited South Korea.
In 2019, the film Parasite, directed by Bong Joon-ho, became the highest-grossing film in South Korea as well as the first non-English language film to win Best Picture at the United States-based Academy Awards.
In 2020, South Korea recorded more deaths than births, resulting in a population decline for the first time on record.
Since late 2020, SK Bioscience Inc. has been producing a major proportion of the Vaxzevria vaccine for worldwide distribution.
On October 21, 2021, the KSLV-2 Nuri was successfully launched, and South Korea became a country with its own space projectile technology.
According to the Health Care Index ranking, South Korea was recognized as having the world's best healthcare system as of 2021.
By 2021, the fertility rate stood at just 0.81 children per woman, well below the replacement rate of 2.1.
In 2021, the survival drama Squid Game received critical acclaim and widespread international attention, becoming Netflix's most-watched series at launch.
In March 2022, Yoon Suk Yeol won a close election.
On May 10, 2022, Yoon Suk Yeol was sworn in as president.
A recent agreement with Novavax expands its production for a second vaccine to 40 million doses in 2022, with a $450 million investment in domestic and overseas facilities.
In 2022, South Korea's fertility rate declined to 0.78 children per woman.
In 2022, South Korea's population density was estimated at 514.6 per square kilometer, which is more than 10 times the global average.
In 2022, South Korea's total spending for research and development grew to more than 4.9% of gross domestic product (GDP).
In 2022, The Economist Democracy Index classified South Korea as a "full democracy", ranking at 24th out of 167 countries.
In 2022, the ROK Armed Forces has a reported personnel strength of 3,600,000.
South Korea had an estimated population of roughly 51.7 million in 2022.
The renewable portfolio standard program with renewable energy certificates runs from 2012 to 2022.
In October 2023, South Korea and Britain agreed to extend a period of low or zero tariffs on bilateral trade of products with parts from the European Union.
As of November 2023, South Korea reached an all-time high of 2.46 million foreign residents, accounting for nearly 5 percent of the total population.
As of 2023, according to the V-Dem Democracy indices South Korea is the 3rd most electoral democratic country in Asia.
In 2023 the government announced a spending cut by about 11% for 2024 and the intention to shift resources to new initiatives, such as efforts to build rockets, pursue biomedical research, and develop US-style biotech innovation.
In 2023, South Korea ranked 6th in the world for life expectancy at 83.5 years.
In 2023, South Korea's fertility rate declined to 0.72 children per woman—the lowest in the world.
In 2023, the number of foreigners who acquired Korean nationality was 234,506, which is a 4.8 percent increase from the prior year.
In May 2024 dedicated to reversing the trend and addressing issues related to aging, immigration, and the workforce.
Government policy, along with a rebound in marriages delayed by COVID-19, may account for the Korean birth rate increasing in late 2024; total births in the third quarter were up 8% from the same period last year, marking the largest quarterly increase since the third quarter of 2012 and the first annual rise in total fertility since 2015.
On December 3, 2024, Yoon declared martial law accusing the opposition of being pro-North Korean.
On December 14, 2024, Yoon's actions resulted in his impeachment.
As of 2024, South Korea has 24 UNESCO Intangible Cultural Heritages of Humanity, along with 16 World Heritage Sites.
Between 2015 and 2024, South Korea saw a slight increase in Christianity (from 27.6% to 31%), a slow rise in Buddhism (from 15.5% to 17%), and a decline in the unaffiliated population (from 56.9% to 51%).
In 2023 the government announced a spending cut by about 11% for 2024 and the intention to shift resources to new initiatives, such as efforts to build rockets, pursue biomedical research, and develop US-style biotech innovation.
In 2024, South Korea was ranked 6th in the Global Innovation Index.
In 2024, South Korea's life expectancy reached 83.53 years, which is the fifth highest globally.
The population of South Korea is expected to peak at 52 million in 2024.
Data released in January 2025 show the number of births in November 2024 was 20,095, a 14.6% increase year-on-year, the highest growth rate since November 2010.
The proportion of people aged 65 years and over is slated to reach over 20% by 2025.
President Moon Jae-in pledged to reduce greenhouse gas emissions to zero in 2050.
The proportion of people aged 65 years and over is slated to close to 45% by 2050.
The population of South Korea is projected to decline to 36 million in 2072.