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 1960 de jure census was the 1st in the United States to collect data by self-enumeration as well as direct interviews. Every 4th household completed a long form questionnaire. One version of the long form was given to 20% of the sample and another with different housing questions was given to 5%. Subjects covered include housing, employment, education, migration, and fertility. The census day was April 1. A 1% sample of households that completed the long form questionnaire (1,799,888 individuals) is available through IPUMS International at the University of Minnesota. Dwellings and vacant units are not identified in the microdata. The IPUMS sample for this census is notable because the variables have been harmonized with census data from other countries, allowing the data to be used together.