Punters dropped nearly $31.5 million into Northland pokie machines last year - about $86,000 each day.
Figures from the Department of Internal Affairs revealed gaming machine expenditure fell in the 12 months to December by about $595,500, while the number of pokie machines dipped slightly to 2748.
Addiction services provider Nga Manga Puriri Trust said Northland's large number of pokie machines put young people at risk.
"Gambling addiction already exists within youth culture,'' trust spokeswoman Leyla Lyndon-Tonga said.
We want to see sinking-lid policies that will help reduce the enormous social cost of problem gambling. Andree Froude, Problem Gambling Foundation spokeswoman "Their computer literacy is a lot more advanced than it was say 10 years ago, which places them at a higher risk given that pokie machines are electronic machines."