On 29 July, the Population Division released the twenty-fourth round of official United Nations population estimates and projections. The 2015 Revision builds on the previous revision by incorporating the findings of new population censuses and specialized demographic surveys, which have been published since the previous revision. This comprehensive review of worldwide demographic trends and future prospects is essential for assessing the degree of progress made in achieving the Millennium Development Goals (MDGs) and to guide policies aimed at achieving the new post-2015 development agenda, which Member States will adopt this fall.(1)