New Zealand's youngest voters were more likely to vote in the 2017 election.

It wasn't a huge surge, but the increase in younger voters was significant and perhaps linked to the popularity of Labour leader Jacinda Ardern.

Turnout didn't only increase for younger voters - all voters were more likely to vote in this year's election compared to 2014, but the change was less pronounced in older age groups.

The age bracket to see the biggest increase in voters was 18-24, with a 6.5-point increase in turnout. It rose from 62.7 percent to 69.3 percent.

Despite the increase in younger voters, older generations are still much more likely to turn up at the polls.