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Iceland is home to 402,329 people in 2026. That is a 2.8-fold increase on the 142,667 recorded in 1950. It is growing modestly, at +0.92% a year, adding about 3.7K people a year. With only 4 people/km², it is one of the world's more sparsely settled countries. Half the population is younger than 36.6 years, and the age structure is steadily tilting older: the median is projected to reach 44.9 by 2050. Men outnumber women in the population, at 105 males per 100 females. By 2100, UN projections see it falling to 362,582 (-10% from 2026).
Total population
402,329
Density
4 people/km²
Median age
36.6 years
Growth rate
+0.92%
Iceland is experiencing rapid population growth, adding thousands of people each year. The population is aging rapidly; median age will rise from 37 in 2026 to 45 by 2050. Population density is low at 4 people per km².