The size of Parliament is not about to increase, despite 150 people listing their occupation on census night as member of Parliament.
New Zealanders can breathe easily - there are still only 121 MPs in the House.
A Statistics New Zealand spokeswoman said the discrepancy was due to "self-reporting".
People filled out their own occupations and little could be done to ensure the details were correct.
Rather than increasing the size of Parliament, recent discussions on the subject have centred on whether there are too many MPs.
A report released last month from the New Zealand Constitution Advisory Panel said the size should not be changed.
But it found much of their discussion supported fewer MPs because participants "did not trust politicians to represent them with integrity".
The last time a vote was held on the number of MPs in Parliament was in 1999 with 81 per cent of the voters in favour of reducing the number of MPs.
- Fairfax Media