United StatesSouth Korea
United States has a population of 340.1M, compared to South Korea's 51.2M. United States is 6.6 times more populous than South Korea. Economically, United States ($28.75T) has a GDP 15.3 times larger than South Korea's ($1.88T). United States covers 9,525,067 km², 95.1 times larger than South Korea's 100,210 km². Life expectancy in South Korea stands at 83.4 years, 5.0 years higher than United States's 78.4 years.
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United States wins
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South Korea wins
Metric
United StatesSouth Korea| Population | 340.1M | 51.2M |
| Area | 9,525,067 km² | 100,210 km² |
| GDP | $28.75T | $1.88T |
| GDP Per Capita | $84,534.041 | $36,238.64 |
| Life Expectancy | 78.4 yrs | 83.4 yrs |
| Infant Mortality | 5.5 | 2.3 |
| Literacy Rate | — | — |
| Unemployment | 4.2% | 2.7% |
| Capital | Washington, D.C. | Seoul |
| Region | Americas | Asia |
| Languages | English | Korean |
| Currencies | USD ($) | KRW (₩) |
Last updated: April 2026
All data sourced from World Bank Open Data (2025) and REST Countries API. Economic data may reflect most recent available year.
Population Comparison
United States is 6.6 times more populous than South Korea, with 340.1M residents compared to 51.2M. United States is among the world's 15 most populous countries, while South Korea is among the world's 30 most populous countries. In terms of population density, United States averages 36 people per km² (sparse), while South Korea averages 511 people per km² (dense). While United States has grown at 0.62% annually over the past decade, South Korea has grown at 0.25% per year over the same period.
Economy Comparison
United States is classified as a high-income economy, while South Korea is classified as a high-income economy. The United States economy ($28.75T) is 15.3 times larger than South Korea's ($1.88T). United States's GDP per capita of $84,534.041 is 526% above the regional average of 13,500 for Americas. South Korea's GDP per capita of $36,238.64 is 224% above the regional average of 11,200 for Asia. On a per-capita basis, residents of United States are on average 2.3 times wealthier than those in South Korea.
Health & Quality of Life
Life expectancy in United States is 78.4 years, compared to 83.4 years in South Korea, a gap of 5.0 years. South Korea (83.4 years) is 11.4 years above the global average of 72 years, while United States (78.4 years) is 6.4 years above the global average of 72 years. At 5.5 deaths per 1,000 live births, United States's infant mortality is 139% higher than South Korea's 2.3.
Geographic Comparison
United States (9,525,067 km²) is 95.1 times larger by land area than South Korea (100,210 km²). United States shares borders with 2 countries, while South Korea borders 1 country. United States spans 11 timezones, compared to South Korea's 1 timezone. United States lies in North America, while South Korea is located in Asia. United States is categorized within the Americas region (North America), whereas South Korea belongs to Asia (Eastern Asia).
Key Differences
The most significant difference between United States and South Korea is in land area: United States's 9,525,067 km² compared to South Korea's 100,210 km² represents a 99% gap. The most significant difference between United States and South Korea is in GDP: United States's $28.75T compared to South Korea's $1.88T represents a 93% gap. The most significant difference between United States and South Korea is in population: United States's 340.1M compared to South Korea's 51.2M represents a 85% gap. These disparities reflect the broader structural differences between United States's high-income economy and South Korea's high-income economy.
At a Glance: What the Numbers Mean
Living Standards
United States has a GDP per capita of $84,534.041, which is 2.3x that of South Korea ($36,238.64). This gap reflects differences in economic development, industrial structure, and workforce productivity. In practical terms, average purchasing power in United States is significantly higher, though cost of living differences partially offset the raw income gap.
Population Density
South Korea is 14.3x more densely populated than United States (511 vs 36 people per km²). Higher density typically correlates with more urbanization, greater demand for public transit, and higher housing costs. United States's lower density suggests more rural land use and potentially lower urban congestion.
Healthcare and Longevity
Citizens of South Korea live an average of 5.0 years longer than those of United States (83.4 vs 78.4 years). This gap reflects differences in healthcare access, nutrition, public health infrastructure, and environmental factors. This is a moderate difference that could narrow with continued development.
Economic Momentum
United States's economy grew at 2.8% compared to South Korea's 2.0%. Both countries show healthy growth, though United States has a modest edge in economic dynamism.
Travel Comparison
United States vs South Korea for Families
For family travel, South Korea generally edges ahead due to lower infant mortality (2.3 vs 5.5 per 1,000), which is a useful proxy for healthcare infrastructure and child safety. United States offers its own advantages, including more geographic diversity for road trips. Both countries have family-friendly attractions, though South Korea's higher GDP per capita typically correlates with better tourist infrastructure, public transport, and English-language availability.
United States vs South Korea for Budget Travelers
South Korea is typically the more budget-friendly destination, with a GDP per capita of $36,238.64 translating to lower prices for accommodation, food, and local transport. Budget travelers in South Korea can expect to spend significantly less per day than in United States. However, United States may offer better value in specific categories such as intercity transport or package deals. Shoulder season travel in either country helps reduce costs further.
United States vs South Korea for Retirees
South Korea's life expectancy of 83.4 years suggests stronger healthcare infrastructure, which is a key factor for retirees. United States may offer a lower cost of living, which stretches pension income further. Key considerations for retirees include visa and residency requirements, healthcare access, climate preferences, and proximity to international airports. Both countries have established expat communities, though the specific visa options and healthcare quality vary by region within each country.
United States vs South Korea Cost of Living
United States's GDP per capita is 2.3x that of South Korea, which generally correlates with a higher cost of living. Housing, dining out, and services tend to be more expensive in United States, while South Korea offers more purchasing power per dollar for everyday expenses. However, cost of living varies significantly by city within each country. Major urban centers in South Korea can approach or exceed average costs in United States's smaller cities.
United States vs South Korea for Digital Nomads
For digital nomads choosing between United States and South Korea, key factors include internet infrastructure, visa policies, cost of living, and timezone compatibility with clients. United States spans 11 timezones while South Korea covers 1. South Korea's lower cost of living makes it attractive for stretching remote income. Both countries have growing digital nomad communities, though specific visa requirements for remote workers differ and should be verified before committing to a longer stay.
Frequently Asked Questions
Which is bigger, United States or South Korea by population?
United States is larger by population, with 340.1M residents compared to South Korea's 51.2M. United States is 6.6 times more populous than South Korea.
Which country has a higher GDP, United States or South Korea?
United States has the higher GDP at $28.75T, compared to South Korea's $1.88T. United States's economy is 15.3 times larger.
How does life expectancy compare between United States and South Korea?
South Korea has a higher life expectancy at 83.4 years, compared to United States's 78.4 years. The gap between the two countries is 5.0 years. United States's life expectancy is 6.4 years above the global average of 72 years, while South Korea's is 11.4 years above the global average of 72 years.
Which country is larger by area, United States or South Korea?
United States is larger by land area, covering 9,525,067 km² compared to South Korea's 100,210 km². United States is 95.1 times larger than South Korea.
What languages are spoken in United States and South Korea?
United States recognizes the following official language: English. South Korea recognizes: Korean. The two countries do not share an official language.
Which country has lower inflation, United States or South Korea?
South Korea has lower inflation at 2.3%, compared to United States's 2.9%. South Korea's inflation is within the 2-3% range considered stable by most central banks, while United States's rate is within the 2-3% range considered stable by most central banks.
Is United States or South Korea better for a family holiday?
For family travel, South Korea generally edges ahead due to lower infant mortality (2.3 vs 5.5 per 1,000), which is a useful proxy for healthcare infrastructure and child safety. United States offers its own advantages, including more geographic diversity for road trips. Both countries have family-f...
Is United States or South Korea cheaper to visit?
South Korea is typically the more budget-friendly destination, with a GDP per capita of $36,238.64 translating to lower prices for accommodation, food, and local transport. Budget travelers in South Korea can expect to spend significantly less per day than in United States. However, United States ma...
Is United States or South Korea better for retirement?
South Korea's life expectancy of 83.4 years suggests stronger healthcare infrastructure, which is a key factor for retirees. United States may offer a lower cost of living, which stretches pension income further. Key considerations for retirees include visa and residency requirements, healthcare acc...
Is United States or South Korea more expensive to live in?
United States's GDP per capita is 2.3x that of South Korea, which generally correlates with a higher cost of living. Housing, dining out, and services tend to be more expensive in United States, while South Korea offers more purchasing power per dollar for everyday expenses. However, cost of living ...
Is United States or South Korea better for digital nomads?
For digital nomads choosing between United States and South Korea, key factors include internet infrastructure, visa policies, cost of living, and timezone compatibility with clients. United States spans 11 timezones while South Korea covers 1. South Korea's lower cost of living makes it attractive ...
Population Growth
United States, 1994 to 2023
Population Growth
South Korea, 1994 to 2023