Almost three million people have completed the census online.
Stats NZ had aimed for 60 percent of New Zealanders to complete the survey by midnight last night.
The 2018 Census general manager Denise McGregor said people are taking an average of four minutes to fill out the dwelling form and eight minutes for the individual one.
Ms McGregor hoped 70 percent of census forms will be completed online by the end of the census collection period.
People will still be able to fill out their forms online for several more weeks.
Stats NZ staff will visit households that don't take part.