The questions posed in the colonies were not uniform and Henry Heylyn Hayter, who conducted the Victorian census, found that this caused difficulties in dealing with Australia-wide data.
Spørgsmålene var dog ikke ens i alle kolonierne og Henry Heylyn Hayter, som stod for Victorias folketælling, påpegede, at det gjorde det vanskeligt at lave statistikker for hele Australien.