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Source Information


Last updated on IDB: August 2017
Base Population
Item Base year Data source Data collection years Notes Ref. No.
Base Population 1986 census 1986 Census population adjusted to include the estimated populations of Afghan and Iraqi refugees, moved to midyear. 1, 2

Latest Data Used in the Estimates and Projections
Item Reference years Data source Data collection years Notes Ref. No.
Population 2016 census 2016 Preliminary census population total used to evaluate the estimates and projections. 3
Fertility 2014 official estimate 2014 Direct estimates of age-specific fertility rates. 3, 4
Mortality 2011 official estimate 2011 Official estimate of life expectancy at birth by sex. 5
Migration 2016 refugee statistics 2016 Based on estimates of refugee stocks and flows. 6

Ref. No. Citations
1 Islamic Republic of Iran, Plan and Budget Organization, Statistical Centre of Iran. 1990. National census of population and housing, October 1986. Tehran.
2 United Nations High Commissioner for Refugees. 2001. Background Paper on Refugees and Asylum Seekers from the Islamic Republic of Iran. Geneva: United Nations High Commissioner for Refugees Centre for Documentation and Research.
3 Financial Tribune. 2017. National Census Preliminary Results Released: Iran's Urban Population Up. March 14.
4 United Nations Statistical Division. 2016. United Nations Demographic Yearbook, 2015. New York. ST/ESA/STAT/SER.R/45
5 Statistical Center of Iran. No date. Selected Findings of the 2011 National Population and Housing Census. Powerpoint presentation.. Tehran.
6 United Nations High Commissioner for Refugees (UNHCR). 2006-2014. UNHCR Statistical Yearbooks.

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Source: U.S. Census Bureau | International Programs | International Data Base | Version: 12.03.21
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