The 2011 Nepal Demographic and Health Survey (NDHS) provides up-to-date information on the population and health situation in Nepal. The 2011 NDHS is the fourth national Demographic and Health Survey conducted in the country. Repeated surveys allow for an analysis of trends over time. The survey is based on a nationally representative sample. It provides estimates at the national, ecological zone, developmental region, and in some cases, subregional levels.