Censuses provide population numbers, household or family size and composition, and information on sex and age distribution. They often include other demographic, economic, and health-related topics as well. The 2008 Sudan de facto census collected data through face-to-face interviews. The census day was April 22, 2008, and data collection finished in May 2008. A 7% sample of households from the census (542,765 individuals) for South Sudan is available through IPUMS International at the University of Minnesota. Refer to the IPUMS website for guidelines on citing database versions.