Twenty-six per cent of the Netherlands lies below sea level, and the polders holding that water back have been under construction since the fourteenth century. The 2026 census counted 18,130,208 people on 33,500 km2 of land, a density of 541 to the square kilometre, and that figure is what a visitor actually experiences: towns arriving one after another with worked farmland in between rather than open country. Twelve provinces sit in Europe. Three further special municipalities belong to the same country and are nowhere near it, out in the Caribbean.
Checked 2026-08-25