United States vs Iran: population comparison
Current population of United States
343,756,314
Live estimate, extrapolated from the latest official figures
- Births today
- 2,065
- Deaths today
- 1,753
- Change today (UTC)
- +1,018
Current population of Iran
93,360,283
Live estimate, extrapolated from the latest official figures
- Births today
- 662
- Deaths today
- 250
- Change today (UTC)
- +486
United States has a population of 341,784,857 and Iran has 92,417,681 (2025 estimates). United States is currently larger by 249,367,176 people — about 4 times Iran's population. They rank 3 and 17 in the world respectively.
Their trajectories differ: Iran grows at +0.92% per year versus +0.52% for United States. At current rates the balance between them keeps shifting.
Beyond size, the structures differ: Iran is the younger society (median age 34.0 vs 38.5); Iran is far more crowded at 56 people per km² against 37.
United States vs Iran population, 1960–2025
Side by side
| Indicator | United States | Iran |
|---|---|---|
| Population | 341,784,857 | 92,417,681 |
| Annual growth | +0.52% | +0.92% |
| Yearly change | +1,781,060 | +849,943 |
| Density (P/km²) | 37 | 56 |
| Land area (km²) | 9,147,420 | 1,622,500 |
| Median age | 38.5 yrs | 34.0 yrs |
| Fertility rate | 1.63 | 1.68 |
| Life expectancy | 78.9 yrs | 77.9 yrs |
| Urban population | 80% | 77% |
| World share | 4.16% | 1.12% |
| 2050 projection (UN) | 380,846,910 | 101,861,993 |
Latest World Bank estimates; median age and 2050 projections from UN WPP 2024. Full profiles: United States · Iran
United States vs Iran FAQ
Is United States bigger than Iran by population?
United States currently has the larger population: 341,784,857 versus 92,417,681 (2025 estimates) — a gap of 249.37 million people.
Which grows faster, United States or Iran?
Iran currently grows faster: +0.92% per year versus +0.52%.
How do United States and Iran compare in 2050?
UN medium-variant projections put United States at 380,846,910 and Iran at 101,861,993 in 2050.