India vs Iran population
In 2025 India has 15.8× as many people as Iran: 1.46 billion against 92.4 million. The difference is 1.37 billion.
Iran would fit inside India 15 times over.
How the two compare
In 2025 India has 15.8× as many people as Iran: 1.46 billion against 92.4 million. The difference is 1.37 billion. Iran would fit inside India 15 times over. Together they hold 19% of the 8.19 billion counted here.
Then and now
In 1960 the order was India ahead, 436 million to 21.5 million, a ratio of 20.3×. Since then India has grown 3.36× and Iran 4.3×, averaging 1.88% and 2.27% a year.
The lines never cross between 1960 and 2050: India stays ahead throughout, and the gap widens by 2050.
Towards 2050
Projected to 2050, India reaches 1.68 billion (14.7% more than today) and Iran reaches 102 million (10.2% more). By then the ratio is 16.5× in favour of India.
Land and people
Land changes the picture: India has 2,973,190 km² and 492 people per km², Iran has 1,622,500 km² and 57 per km². India is 8.64× more densely settled.
Behind the totals, fertility is 1.96 in India and 1.68 in Iran; life expectancy is 72.2 against 77.9 years; 7.4% against 8.6% of people are 65 or older. The younger the population, the longer it keeps growing after birth rates fall.
Where the numbers come from
Figures are the World Bank's "Population estimates and projections" series, built from United Nations and national statistics. Values up to 2025 are estimates; 2026–2050 are projections that assume current fertility, mortality and migration trends continue, so they are not forecasts of events such as wars or policy changes. Territories are listed as the World Bank lists them, and a small number of places have gaps in some years.
How the numbers are taken. Total population from the World Bank's population estimates and projections (built from United Nations and national statistics). Values to 2025 are estimates; 2026–2050 are projections that continue current fertility, mortality and migration trends. Sources and limits.