Sample characteristics: Iran

Census characteristics
	2006
Title	2006 General Census of Population and Housing
Census agency	Statistical Centre of Iran
Population universe	—
De jure or de facto	De jure
Enumeration unit	Household
Census day	28 October to 17 November 2006
Field work period	—
Enumeration forms	Form No.2 Household Questionnaire - General types (for most of normal and collective households); Form No.3 Household Questionnaire - General and detailed types (for the rest of normal and collective households and all of unsettled normal households); Form No.4 Institutional Household Questionnaire (for all all institutional households)
Type of field work	—
Respondent	—
Coverage	—

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Microdata sample characteristics
	2006
Microdata source	Statistical Centre of Iran
Sample design	Simple random sampling is used to draw samples from private settled and collective households who answered the long household questionnaire. The data were classified into urban and rural areas within counties. The sampling portion in each category was 20%.
Sample unit	Household
Sample fraction	2%
Sample size (person records)	1,299,825
Sample weights	Computed by the Statistical Centre of Iran and should be used for most types of analysis

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Units identified
	2006
Dwellings	No
Vacant units	No
Households	Yes
Individuals	Yes
Group quarters	Yes
Indigenous population	No
Special populations	Unsettled populations
Smallest geography	Province

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Unit definitions
	2006
Dwellings	—
Households (Normal households)	People who have a common residence (stable or unstable) and also common expenditures. They need not be related.
Collective households	People who live in a place as a group, and that place is considered their normal residence.
Institutional households	People who live together in an institute due to a common goal or quality, and that institute is considered as their normal residence

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