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Guernsey is projected to count 64,609 residents in 2026. That is up 44% from 44,947 in 1950. It is growing modestly, at +0.15% a year. People are packed in tightly, at 1,010 people/km², among the most crowded places on Earth. Half the population is younger than 44.5 years, and the age structure is steadily tilting older: the median is projected to reach 48.6 by 2050. The sexes are close to evenly balanced, at 98 males per 100 females. By 2100, UN projections see it falling to 52,910 (-18% from 2026).
Total population
64,609
Density
1,010 people/km²
Median age
44.5 years
Growth rate
+0.15%
Guernsey's population continues to grow, though at a moderate pace. The population is gradually aging, with median age projected to reach 49 by 2050 (up from 44 in 2026). Population density is high at 1,010 people per km².