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 1989 Mongolia de facto and de jure census collected data through face-to-face interviews on the subjects of housing, household demographics, employment, education, and fertility. The census day was January 5, 1989 and fieldwork continued until January 9. A 10% differentially weighted sample of households from the census (190,631 individuals) is available through IPUMS International at the University of Minnesota. Refer to the IPUMS website for guidelines on citing database versions.