Religion is a faith a person follows or membership to a spiritual organization. It is important to present the question on the type of religion to all members of the household and fill this column. When the answer is "Christian" to this question, then the specific type has to be further identified and filled in column 20 by choosing one from codes 1 to 3 in column 20. Hence the type of religion each member follows has to be identified by asking the member and cross checking with the list given at the top of the column and to be entered in the space provided in the column and the correct code in card column 37.

Sometimes it may be attempted to predict religion of household members simply be taking the household head's religion. Since this is not the right approach, each of the household members must be interviewed and the response has to be entered in the column and its code in card column 37. Husband and wife can have different religions.

The type of religion filled for children will be the religion of their parents. For children born from parents with different religions their father's religion will be taken for them.