POOR family relationships was a key reason driving young people to leave home.
A Mission Australia report on youth homelessness asked 19,000 young Australians about their home life and relationships.
It found up to one in seven spent time away from home in the past three years and of those 85% left home on more than one occasion.
Other research has shown that as many as 44,000 young people are 'homeless' on any given night.
The report also showed that 52% of those surveyed felt they could not return home because of poor relationships with their family.
Mission Australia chief Catherine Yeomans said the rate of youth homelessness was unacceptable in Australia today.
She said the long-term prospects of young homeless people were poor, potentially leading to "a disjointed education, lack of support network, risky drug and alcohol use and mental illness".
The non-profit group urged more government funding be put towards early intervention programs and initiatives to help young people re-connect with their family.
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