Northland received 15.2 per cent, Auckland 13.1 per cent and Coromandel 11.9 per cent.
Bookabach general manager Peter Miles said overall, recorded rental activity was up 30 percent on last year, with 39,656 adults and 10,741 children staying at rented baches over the holiday period.
"On average, families on holiday in the Bay of Plenty had the highest number of children with them. Bookings in the region also tended to have the largest groups overall, with an average of 3.9 adults per booking, compared to just 2.5 in the Canterbury region," he said.
Mr Miles said the data could be useful for those who are already thinking about where to go next Christmas and New Year.