Frank Wallace Notestein (August 16, 1902 - February 19, 1983) was an American demographer who contributed significantly to the development of the science. He was the founding director of the Office of Population Research at Princeton University, and later president of the Population Council. He was also the first director of the Population Division of the United Nations, 1946-1948. Map of countries by population Population growth showing projections for later this century Demography is the scientific study of human population dynamics. ... The Office of Population Research (OPR) at Princeton University is the oldest population research center in the United States. ... Princeton University is a coeducational private university located in Princeton, New Jersey, in the United States of America. ... The Population Council is an international, nonprofit, non-governmental organization that seeks to improve the well-being and reproductive health of current and future generations around the world and to help achieve a humane, equitable, and sustainable balance between people and resources. ... The foundation of the U.N. The United Nations (UN) is an international organization whose stated aims are to facilitate co-operation in international law, international security, economic development, social progress and human rights issues. ...