The Population Council produces two high-impact peer-reviewed journals: Population and Development Review (PDR) and Studies in Family Planning (SFP). Over the next few weeks, we are highlighting the top 10 most downloaded articles of 2016 for each journal. The topics explored in these papers highlight the diversity of research published in both journals on critical global health and development issues. PDR authors investigated population-related questions and policies on immigration, gender, family, marriage, fertility, and mortality. In Studies, researchers examined trends in unintended pregnancies, abortion, and contraceptive use; the evolution of China’s one-child policy; the effects of Haiti’s earthquake on women’s reproductive options, and more.