Housing lists around the country have grown an average of 42% in the past year.
Figures supplied to the Irish Times show the biggest jump was in County Roscommon which had 252 people seeking houses on the list last year, and now has 516.
It comes ahead of the launch today of a new Housing Action Group which will see mothers affected by homelessness lobby the Government to make the housing crisis its top priority.
Figures show six new people are now becoming homeless every day in Ireland.
Co-founder of the Housing Action Group Gwen Connell says the Government cannot continue to ignore the problem.