Youth unemployment has skyrocketed by more than 10 percentage points in two years in some regions, as a new national report reveals how postcodes shape the future of young Australians.

The new report has found already high youth unemployment rates have jumped from 18.8 per cent to 28.9 per cent in two years to January 2018 in the Southern Highlands and Shoalhaven, NSW. In the Coffs Harbour/Grafton area, the rate has increased from 9.4 per cent to 19.8 per cent.

In Bendigo, Victoria the rate increased from 11.4 per cent to 16.2 per cent over the same two-year period. In North-West Melbourne, it has increased from 14.4 per cent to 17.5 per cent.

The Brotherhood of St Laurence report to be released today shows a slight improvement in youth unemployment in Sydney's outer west and Blue Mountains from 8.2 per cent in 2016 to 8.1 per cent in January.