Ireland vs United States
Ireland has a population of 5.5M, compared to United States's 340.1M. United States is 62.3 times more populous than Ireland. Economically, United States ($28.75T) has a GDP 47.2 times larger than Ireland's ($609.2B). United States covers 9,525,067 km², 135.5 times larger than Ireland's 70,273 km². Life expectancy in Ireland stands at 82.9 years, 4.5 years higher than United States's 78.4 years.
IrelandUnited States| Population | -98.4%5.5M | +6130.7%340.1M |
| Area | -99.3%70,273 km² | +13454.4%9,525,067 km² |
| GDP | -97.9%$609.2B | +4619.8%$28.75T |
| GDP Per Capita | +33.5%$112,894.953 | -25.1%$84,534.041 |
| Life Expectancy | +5.7%82.9 yrs | -5.4%78.4 yrs |
| Infant Mortality | -38.2%3.4 | +61.8%5.5 |
| Literacy Rate | — | — |
| Unemployment | +10.3%4.6% | -9.4%4.2% |
| Capital | Dublin | Washington, D.C. |
| Region | Europe | Americas |
| Languages | English, Irish | English |
| Currencies | EUR (€) | USD ($) |
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 62.3 times more populous than Ireland, with 340.1M residents compared to 5.5M. Ireland is a nation of 5.5M people, while United States is among the world's 15 most populous countries. In terms of population density, Ireland averages 78 people per km² (moderate), while United States averages 36 people per km² (sparse). While Ireland has grown at 1.40% annually over the past decade, United States has grown at 0.62% per year over the same period.
Economy Comparison
Ireland is classified as a high-income economy, while United States is classified as a high-income economy. The United States economy ($28.75T) is 47.2 times larger than Ireland's ($609.2B). Ireland's GDP per capita of $112,894.953 is 303% above the regional average of 28,000 for Europe. United States's GDP per capita of $84,534.041 is 526% above the regional average of 13,500 for Americas. On a per-capita basis, residents of Ireland are on average 1.3 times wealthier than those in United States.
Health & Quality of Life
Life expectancy in Ireland is 82.9 years, compared to 78.4 years in United States, a gap of 4.5 years. Ireland (82.9 years) is 10.9 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 62% higher than Ireland's 3.4.
Geographic Comparison
United States (9,525,067 km²) is 135.5 times larger by land area than Ireland (70,273 km²). Ireland shares borders with 1 country, while United States borders 2 countries. Ireland spans 1 timezone, compared to United States's 11 timezones. Ireland lies in Europe, while United States is located in North America. Ireland is categorized within the Europe region (Northern Europe), whereas United States belongs to Americas (North America).
Key Differences
The most significant difference between Ireland and United States is in land area: Ireland's 70,273 km² compared to United States's 9,525,067 km² represents a 99% gap. The most significant difference between Ireland and United States is in population: Ireland's 5.5M compared to United States's 340.1M represents a 98% gap. The most significant difference between Ireland and United States is in GDP: Ireland's $609.2B compared to United States's $28.75T represents a 98% gap. These disparities reflect the broader structural differences between Ireland's high-income economy and United States's high-income economy.
At a Glance: What the Numbers Mean
Living Standards
Ireland has a GDP per capita of $112,894.953, which is 1.3x that of United States ($84,534.041). This gap reflects differences in economic development, industrial structure, and workforce productivity. In practical terms, average purchasing power in Ireland is significantly higher, though cost of living differences partially offset the raw income gap.
Population Density
Ireland is 2.2x more densely populated than United States (78 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 Ireland live an average of 4.5 years longer than those of United States (82.9 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 Ireland's 2.6%. Both countries show healthy growth, though United States has a modest edge in economic dynamism.
Frequently Asked Questions
Which is bigger, Ireland or United States by population?
United States is larger by population, with 340.1M residents compared to Ireland's 5.5M. United States is 62.3 times more populous than Ireland.
Which country has a higher GDP, Ireland or United States?
United States has the higher GDP at $28.75T, compared to Ireland's $609.2B. United States's economy is 47.2 times larger.
How does life expectancy compare between Ireland and United States?
Ireland has a higher life expectancy at 82.9 years, compared to United States's 78.4 years. The gap between the two countries is 4.5 years. Ireland's life expectancy is 10.9 years above 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, Ireland or United States?
United States is larger by land area, covering 9,525,067 km² compared to Ireland's 70,273 km². United States is 135.5 times larger than Ireland.
What languages are spoken in Ireland and United States?
Ireland recognizes the following languages: English, Irish. United States recognizes: English. Both countries share at least one common language.
Which country has lower inflation, Ireland or United States?
Ireland has lower inflation at 2.1%, compared to United States's 2.9%. Ireland'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.