 The Population Reference Bureau has both past and current programs and service projects around the globe, mainly focused in the United States, and parts of the developing world including Sub-Saharan Africa and the Middle East.Projects in the United States vary from analyses of demographic and economic data, projects aiding collecting data for the American Community Survey, and studying factors of aging and factors of health in children.International projects focus on learning about health and disease for at risk populations, family planning and reproductive health, and further using this learned knowledge to establish programs to improve communities.