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Belgium is projected to count 11,774,642 residents in 2026. That is up 37% from 8,617,441 in 1950. It is growing modestly, at +0.12% a year, adding about 14.6K people a year. Settlement is fairly dense, at 389 people/km². Half the population is younger than 42.1 years, and the age structure is steadily tilting older: the median is projected to reach 45.2 by 2050. The sexes are close to evenly balanced, at 97 males per 100 females. By 2100, UN projections see it falling to 11,060,848 (-6% from 2026).
Total population
11,774,642
Density
389 people/km²
Median age
42.1 years
Growth rate
+0.12%
Belgium's population continues to grow, though at a moderate pace. The population is gradually aging, with median age projected to reach 45 by 2050 (up from 42 in 2026).