Population census was conducted in three phases: main count, Post Enumeration Check (PEC) and Sample Census. The main .count was done by modified defacto method. People were counted in places where they had been during the census night. The PEC was conducted to measure the coverage and the general quality of the main count. In the PEC, the sampLe units (EA5) were enumerated with reference to both census night and the PEC night. Thus, because of defacto method of counting, persons temporarily living outside the territory of Bangladesh remained out of scope of the count although foreigners living in Bangladesh were counted. The sample census was conducted in modified dejure method.
In the census, 12 questions related to households and 13 questions related to individuals were asked. The unit of enumeration was household. Information collected about households are address, household number, type of household, material of wall and roof of the main house, tenancy, source of drinking water, toilet facilities, electricity connection, ownership of agricultural land, main source of household income and tribal status. The infrmatjon on individuals covered are name, age, relationship with the head of household, sex, marital status, religion, highest class passed, field of education, school attendance, literacy, economic activity, employment status and nationality. The entire country was divided into 2,11,538 enumeration areas. To ensure accurate enumeration elaborate steps were taken for publicity and people's participation and close supervision was established. During precensus operation all administrative and geographic areas up to village were identifi'ed and linked with union. Thus, all attempts were made so that an individual, no household and no area were left uncounted or counted twice.