Family size is -
Family size 

Family size means the total number of children a woman has born at a point in time.
The completed family size indicates the total number of children borne by a woman during her child bearing age (15 - 45 years).
The total fertility rate gives the approximate magnitude of the completed family size. 
The family planning programme's campaign is currently based on the theme of a "two-child"family norm, with a view to reach the long-term demographic goal of NRR = 1
Total number of family members in the family
Total number of female children born in the family
Total number of children in the family
Total number of female children in the family considering the mortality