information:filtering, structural:expansion
Demographics

The beginning of the Upper Palaeolithic is thought to have been characterised by a major population increase in Europe, with the human population of western Europe possibly increasing by a factor of 10 in the Neanderthal/modern human transition. The archaeological record indicates that the overwhelming majority of Palaeolithic people (both Neanderthals and modern humans) died before reaching the age of 40, with few elderly individuals recorded. It is possible the population boom was caused by a significant increase in fertility rates.

A 2005 study estimated the population of Upper Palaeolithic Europe by calculating the total geographic area which was inhabited based on the archaeological record; averaged the population density of Chipewyan, Hän, Hill people, and Naskapi Native Americans which live in cold climates and applied to this to Cro-Magnons; and assumed that population density continually increased with time calculated by the change in the number of total sites per time period. The study calculated that: from 40 to 30 thousand years ago the population was roughly 1,700–28,400 (average 4,400); from 30 to 22 thousand years ago roughly 1,900–30,600 (average 4,800); from 22 to 16.5 thousand years ago roughly 2,300–37,700 (average 5,900); and 16.5–11.5 thousand years ago roughly 11,300–72,600 (average 28,700).

Following the LGM, Cro-Magnons are thought to have been much less mobile and featured a higher population density, indicated by seemingly shorter trade routes as well as symptoms of nutritional stress.