Income and wealth percentile in South Korea

What the numbers say about South Korea.

Korean median income is around ₩36 million per adult, roughly $26,500 at current exchange rates. The average sits at ₩51 million. Those numbers place Korea solidly in the OECD upper half but below Japan and most of Western Europe in dollar terms. The economy runs on a small number of very large industrial groups, most visibly Samsung, Hyundai, LG, and SK, plus a thick small-and-medium-enterprise supply chain that supports them.

The chaebol concentration is the single most important fact about the income distribution. Roughly 30 percent of South Korea's GDP flows through the top four chaebol groups. Wages at the major chaebol affiliates run two to three times the wages at small and medium suppliers, often for the same kind of work. The result is a deeply dual labour market: secure, well-paid careers inside the big groups, and precarious, lower-paid work in the supply chain. The gap is one of the largest in the OECD and shapes how Koreans think about education, marriage, and family planning.

Education spending intensity has no peer in the developed world. Korean households spend a higher share of disposable income on private after-school education (hagwon) than any other OECD country. The pressure starts in primary school and accelerates through high school toward the university entrance exam, which still largely determines which chaebol or top-tier firm a graduate can hope to enter. The cost of raising and educating a child in Seoul has become a leading explanation for the world's lowest fertility rate, which fell to 0.72 in 2023 and is expected to keep falling.

Seoul real estate dominates the wealth distribution. Apartment prices in the Gangnam districts roughly tripled between 2014 and 2021 before levelling off. Median household net worth per adult is around ₩142 million, with the top 1% threshold above ₩3 billion. Almost all that wealth is in apartments. The chonsei rental system, where tenants make a large lump-sum deposit instead of monthly rent, has been under structural strain since interest rates rose in 2022, with several high-profile defaults exposing the system's vulnerabilities.

Two themes shape the next decade. The fertility collapse will reshape the labour market and pension system within a generation. And the chaebol model, which carried Korea from poverty to OECD membership in two generations, faces succession pressure as founding families age and Chinese competitors close the gap in semiconductors, batteries, and shipbuilding.