South Sudan vs United States
South Sudan has a population of 15.8M, compared to United States's 340.1M. United States is 21.5 times more populous than South Sudan. United States covers 9,525,067 km², 15.4 times larger than South Sudan's 619,745 km². Life expectancy in United States stands at 78.4 years, 20.8 years higher than South Sudan's 57.6 years.
South SudanUnited States| Population | -95.4%15.8M | +2054.4%340.1M |
| Area | -93.5%619,745 km² | +1436.9%9,525,067 km² |
| GDP | — | $28.75T |
| GDP Per Capita | — | $84,534.041 |
| Life Expectancy | -26.5%57.6 yrs | +36.0%78.4 yrs |
| Infant Mortality | +1220.0%72.6 | -92.4%5.5 |
| Literacy Rate | — | — |
| Unemployment | — | 4.2% |
| Capital | Juba | Washington, D.C. |
| Region | Africa | Americas |
| Languages | English | English |
| Currencies | SSP (£) | USD ($) |
Last updated: March 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 21.5 times more populous than South Sudan, with 340.1M residents compared to 15.8M. South Sudan is a nation of 15.8M people, while United States is among the world's 15 most populous countries. In terms of population density, South Sudan averages 25 people per km² (sparse), while United States averages 36 people per km² (sparse). United States has grown at 0.62% annually over the past decade. Population growth data is not available for South Sudan.
Economy Comparison
South Sudan is classified as a low-income economy, while United States is classified as a high-income economy. United States's GDP stands at $28.75T. GDP data is not available for South Sudan. Economic indicator data is not available for South Sudan. United States's GDP per capita of $84,534.041 is 526% above the regional average of 13,500 for Americas.
Health & Quality of Life
Life expectancy in South Sudan is 57.6 years, compared to 78.4 years in United States, a gap of 20.8 years. United States (78.4 years) is 6.4 years above the global average of 72 years, while South Sudan (57.6 years) is 14.4 years below the global average of 72 years. At 72.6 deaths per 1,000 live births, South Sudan's infant mortality is 1220% higher than United States's 5.5.
Geographic Comparison
United States (9,525,067 km²) is 15.4 times larger by land area than South Sudan (619,745 km²). South Sudan shares borders with 6 countries, while United States borders 2 countries. South Sudan spans 1 timezone, compared to United States's 11 timezones. South Sudan lies in Africa, while United States is located in North America. South Sudan is categorized within the Africa region (Middle Africa), whereas United States belongs to Americas (North America).
Key Differences
The most significant difference between South Sudan and United States is in population: South Sudan's 15.8M compared to United States's 340.1M represents a 95% gap. The most significant difference between South Sudan and United States is in land area: South Sudan's 619,745 km² compared to United States's 9,525,067 km² represents a 93% gap. The most significant difference between South Sudan and United States is in infant mortality: South Sudan's 72.6 per 1,000 compared to United States's 5.5 per 1,000 represents a 92% gap. These disparities reflect the broader structural differences between South Sudan's low-income economy and United States's high-income economy.
At a Glance: What the Numbers Mean
Population Density
United States is 1.4x more densely populated than South Sudan (36 vs 25 people per km²). Higher density typically correlates with more urbanization, greater demand for public transit, and higher housing costs. South Sudan's lower density suggests more rural land use and potentially lower urban congestion.
Healthcare and Longevity
Citizens of United States live an average of 20.8 years longer than those of South Sudan (78.4 vs 57.6 years). This gap reflects differences in healthcare access, nutrition, public health infrastructure, and environmental factors. This is a substantial gap that suggests significant differences in healthcare systems and overall living conditions.
Frequently Asked Questions
Which is bigger, South Sudan or United States by population?
United States is larger by population, with 340.1M residents compared to South Sudan's 15.8M. United States is 21.5 times more populous than South Sudan.
Which country has a higher GDP, South Sudan or United States?
GDP data is not available for South Sudan. Please refer to the World Bank for the most current figures.
How does life expectancy compare between South Sudan and United States?
United States has a higher life expectancy at 78.4 years, compared to South Sudan's 57.6 years. The gap between the two countries is 20.8 years. South Sudan's life expectancy is 14.4 years below the global average of 72 years, while United States's is 6.4 years above the global average of 72 years.
Which country is larger by area, South Sudan or United States?
United States is larger by land area, covering 9,525,067 km² compared to South Sudan's 619,745 km². United States is 15.4 times larger than South Sudan.
What languages are spoken in South Sudan and United States?
South Sudan recognizes the following official language: English. United States recognizes: English. Both countries share at least one common language.
Which country has lower inflation, South Sudan or United States?
United States has lower inflation at 2.9%, compared to South Sudan's 91.4%. United States's inflation is within the 2-3% range considered stable by most central banks, while South Sudan's rate is severely elevated at 91.4%, a rate that erodes household purchasing power.