A country cannot grasp the targeted goal of its annual development plan until it looks into its population phenomena. Long term programme would be greatly affected if it is not considered in future birth, death and migration data. It is most necessary for each policy maker to look upon the national demographic situation and changing scenario of it in the future. Cohort component method is most widely used method to project future population which can also be calculated by matrix calculation that was given by Leslie (1945). Population Projection of the Netherlands for the period of 2009-2049 was completed. Historical data, past trends of the Netherlands are analytically applied to get the projected population based on cohort component method which has utilized matrix calculation. During this projection period the total population of the Netherlands was 16.4million in 2009 and will reach to 17.2millions in 2049.It is projected that old age population of the country would increase that alarms country to look at its current social as well as health policy. This book is applicable for the Master’s level students in demography as well as development experts working in policy level.