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Seoul

#35 largest metro areaAsia

In South Korea · Also known as Soul of Asia, The Miracle on the Han River, K-Wave Capital

Metro population
9,733,509
0.117% of world population
Archive estimate
Annual growth
−0.25%
About 67 people a day
Archive estimate
Density
16,088/km²
605 km² metro area
City proper
10,349,312
Within the administrative boundary
GeoNames

About Seoul

Seoul is the capital and largest city of South Korea, with a metropolitan population exceeding 25 million—about half of South Korea's total population. One of the world's most technologically advanced cities, Seoul is a global center for technology, pop culture (K-pop, K-drama), fashion, and innovation. The city rose from Korean War ruins to become a leading global metropolis in just decades.

Key Facts

Continent
Asia
World rank
#35 of 140
Share of country
18.8%
Founded
1395
Leadership
Oh Se-hoon
Elevation
38 m
Coordinates
37.566, 126.978
Climate
Humid continental; cold dry winters; hot humid summers; pleasant spring and fall; monsoon in summer

Airports

Scheduled-service airports within 100 km, nearest first.

  • Seoul Gimpo International AirportGMP

    17 km from the city centre

  • Incheon International AirportICN

    48 km from the city centre

  • Wonju Airport / Hoengseong Air Base (K-38/K-46)WJU

    88 km from the city centre

Source: OurAirports, matched by distance.

History

Seoul has been Korea's capital for over 600 years since the Joseon Dynasty established it in 1394. The city was devastated during the Korean War (1950-53) and rebuilt from scratch. Rapid industrialization from the 1960s transformed it into a modern metropolis. Seoul hosted the 1988 Olympics, announcing Korea's arrival as a developed nation. Today it's a showcase of Korean modernity.

Economy

Seoul generates about 50% of South Korea's GDP. It hosts headquarters of chaebols (conglomerates) including Samsung, Hyundai, LG, and SK. Key sectors include technology, electronics, automotive, finance, and entertainment. Gangnam is famous as a wealthy business district (and a viral song). The startup ecosystem is vibrant. The city is a global leader in broadband, 5G, and smart city initiatives.

Culture

Seoul's cultural influence is extraordinary. K-pop and K-drama have global fanbases. Traditional palaces coexist with neon-lit entertainment districts. Korean cuisine (kimchi, Korean BBQ, bibimbap) is increasingly global. Skincare and fashion set trends. Nightlife in Hongdae and Itaewon is legendary. Despite modernity, Confucian values remain influential. Temple stays offer spiritual retreats within the city.

Transportation

Seoul has one of the world's best metro systems—clean, efficient, with 23 lines. High-speed KTX trains connect to all major cities. Incheon International Airport (consistently rated world's best) is 60km away. Buses are extensive. Taxis are affordable. The city has excellent public Wi-Fi everywhere. Traffic is managed with technology and congestion pricing.

Current Challenges

Seoul faces challenges including extreme housing costs (jeonse system under stress), low birth rates (world's lowest fertility rate), aging population, youth unemployment, air pollution from China, income inequality, and intense academic/work pressure. North Korean threat adds security considerations. Work-life balance remains difficult in the 'ppalli ppalli' (hurry hurry) culture.

Highlights

Landmarks & Attractions

  • Gyeongbokgung Palace
  • N Seoul Tower
  • Bukchon Hanok Village
  • Dongdaemun Design Plaza
  • Myeongdong shopping district
  • Lotte World Tower (555m)
  • Cheonggyecheon Stream
  • War Memorial of Korea

What Seoul Is Known For

  • K-pop
  • Technology
  • Korean BBQ
  • Skincare
  • Palaces
  • Night markets

Universities

  • Seoul National University
  • Yonsei University
  • Korea University
  • KAIST (nearby)

Sports Teams

  • FC Seoul
  • Kiwoom Heroes (baseball)
  • Seoul Dynasty (esports)

Interesting Facts

  • Seoul has the world's fastest average internet speed
  • The city has 10 UNESCO World Heritage sites
  • Gangnam Style put the wealthy district on the global map
  • Seoul's subway has heated seats, phone chargers, and 4G/5G throughout
  • South Koreans average 72 hours of work per week—among the highest globally
  • The DMZ (border with North Korea) is just 35km from central Seoul

Compared with the World's Largest Cities

Metropolitan population against the fifteen largest metro areas.

  1. Tokyo37.4M
  2. Delhi32.9M
  3. Shanghai29.2M
  4. São Paulo22.6M
  5. Dhaka22.5M
  6. Mexico City22.3M
  7. Cairo22.2M
  8. Mumbai21.7M
  9. Beijing21.5M
  10. Osaka19M
  11. New York18.9M
  12. Karachi17.1M
  13. Kinshasa17.1M
  14. Chongqing16.9M
  15. Lagos15.9M
  16. Seoul9.73M
Metro populations are archive estimates; boundaries differ between national statistical agencies.
Seoul compared with the fifteen largest metropolitan areas
NameMetro population
Tokyo37.4M
Delhi32.9M
Shanghai29.2M
São Paulo22.6M
Dhaka22.5M
Mexico City22.3M
Cairo22.2M
Mumbai21.7M
Beijing21.5M
Osaka19M
New York18.9M
Karachi17.1M
Kinshasa17.1M
Chongqing16.9M
Lagos15.9M
Seoul9.73M

Population Trend in South Korea

No free source publishes metropolitan population back to 1950, so the parent country's series is shown instead.

010M20M30M40M50M1950197520002025205020752100projected →
This is South Korea's national population, not Seoul's. The legacy city series this page previously carried was generated by scaling the current figure, so it has been dropped rather than presented as history. Source: UN World Population Prospects 2024.
South Korea population, 1950 to 2100
YearPopulation
195019,757,321
196026,115,379
197032,542,197
198038,141,107
199044,081,427
200046,766,661
201048,769,332
202051,858,482
203051,188,584
204048,948,687
205045,143,134
206039,857,228
207034,452,987
208029,671,508
209025,449,094
210021,848,791

Nearest Major Cities

Closest cities in our dataset by great-circle distance.

Seoul Population FAQ

What is the population of Seoul?

Seoul's metropolitan area has about 9,733,509 people, making it the 35th largest metro area in our dataset of 140 major cities.

What is the difference between Seoul's city and metro population?

About 10,349,312 people live within the city proper, while the wider metropolitan area holds roughly 9,733,509. Metro figures include surrounding commuter areas that fall outside the city's administrative boundary.

Is Seoul growing or shrinking?

Seoul is shrinking at −0.25% a year.

What share of South Korea's population lives in Seoul?

Seoul's metro area holds about 18.8% of South Korea's total population.

How densely populated is Seoul?

Seoul has roughly 16,088 people per km² across a metro area of about 605 km².

Which airports serve Seoul?

The nearest major airports are Seoul Gimpo International Airport (GMP), Incheon International Airport (ICN), Wonju Airport / Hoengseong Air Base (K-38/K-46) (WJU).

Which country is Seoul in?

Seoul is in South Korea, in Asia.

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