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 2011 Turkey Census enumerated approximately 2.2 million households, and complete enumeration was done in institionalized populations. Data was collected using hand held devices and paper questionnaires. Questions regarding hearing and vision loss were directed at all individuals ages 3 years and older.