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In 2026, Guam's population is projected at 170,185. That is a 2.8-fold increase on the 60,776 recorded in 1950. It is growing modestly, at +0.69% a year, adding about 1.2K people a year. Settlement is fairly dense, at 315 people/km². Half the population is younger than 31.6 years, and the age structure is steadily tilting older: the median is projected to reach 34.7 by 2050. The sexes are close to evenly balanced, at 102 males per 100 females. By 2100, UN projections see it rising to 205,502, up 21% from 2026.
Total population
170,185
Density
315 people/km²
Median age
31.6 years
Growth rate
+0.69%
Guam's population continues to grow, though at a moderate pace. The population is gradually aging, with median age projected to reach 35 by 2050 (up from 32 in 2026).