The scenario projections presented in this report make more extreme assumptions in the high and low values of possible future fertility, mortality and migration levels than are usual in national population projections. Hence this effort should not be seen as competition to national projections, but rather as a scientific contribution to the discussion about possible future population trends and the sensitivity of certain policies (such as pension schemes) to such alternative paths. Future population trends are inherently uncertain. The report gives alternative population projections for all member countries of the Council of Europe (with the exception of Turkey) that had a population of more than one million in 1990