The latest figures on holiday parks shows it's now a $1.2 billion sector annually, with some of Whanganui's 110,00 thousand visitors per year contributing to it.
Data commissioned by Holiday Parks New Zealand looked at a range of different regions and types of visitors.
It showed nationally peak season visitors spent an average of $144 per night, with $127 coming from domestic guests and $168 attributed to international guests.
Holiday Parks New Zealand chief executive Fergus Brown said he was pleased more than 60 per cent of holiday park guest nights were taken by domestic travellers.
"It's positive to see that New Zealanders still choose to stay in our holiday parks on their travels throughout the regions of New Zealand.