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In 2026, Tonga's population is projected at 103,291. That is a 2.1-fold increase on the 49,660 recorded in 1950. Numbers are roughly stable, edging down 0.43% a year. Settlement is fairly dense, at 159 people/km². Half the population is younger than 21.0 years, and the age structure is steadily tilting older: the median is projected to reach 26.5 by 2050. Women outnumber men, at 89 males per 100 females. By 2100, UN projections see it rising to 117,871, up 14% from 2026.
Total population
103,291
Density
159 people/km²
Median age
21.0 years
Growth rate
-0.43%
Tonga's population edges slowly lower. The sex ratio of 89 males per 100 females is notably lower than the global average of ~101. The population is aging rapidly; median age will rise from 21 in 2026 to 27 by 2050.