Rents in southern Dublin suburbs have become increasingly out of reach for those on Housing Assistance Payment supports, according to the latest information.

The Dun Laoghaire/Rathdown local authority area has the lowest proportion of households receiving HAP or Homeless HAP payments according to information received following Freedom of Information requests.

The area has just under four households on HAP per 100,000 of population, Dublin City and Fingal are nine and a half and eight respectively while South Dublin County Council has the highest with 11.

When it comes to Homeless HAP, the extra payment for households in danger of homelessness, the difference is even more marked.

Dublin City and South Dublin both have seven households per 100,000 population on Homeless HAP while Fingal has six and Dun Laoghaire/Rathdown has just two.

It is understood that the rents in more and more areas of Dun Laoghaire/Rathdown have become out of reach of housing supports in recent years.

The HAP payment which is means tested depends on the local rental prices and ranges from €180 for a single person in shared accommodation in Longford to €1,275 for a family of two children in the four Dublin local authority areas.

The Homeless HAP payment goes up to a maximum of €1,950 however even at these rates many people from Dun Laoghaire have to elsewhere to get HAP accommodation.

The latest figures from Daft.is show that the average rent in South County Dublin is €2,221 - the highest of the Dublin areas.

Overal, according to the Department of Housing, 40% of the country's Homeless HAP households were in Dublin at the end of March.

Emergency homeless accommodation is even more concentrated in the capital which has just 25% of the population but nearly 70% of emergency homeless accommodation.

Within Dublin some areas have higher concentrations of supported housing than others.

In the South Dublin council area 63% of HAP households live in the Dublin 24 or Dublin 22 postcodes which cover Tallaght and Clondalkin.

In Fingal, HAP households are concentrated in Dublin 15 which covers Blanchardstown with 40% of its total, Balbriggan 15% and Swords 12%.

In Dublin City 39% live in Dublin 1, 3, 7, 8 and 11 postcodes which cover the North City, Fairview, North West City, South West City and Ballymun.

Dublin 8 has the highest total with 526 household or 10% of the total.

Of the 5,218 households receiving HAP from Dublin City Council 1,159 or 30% live in other Dublin local authority areas.

Dublin authorities will also pay supports to families getting cheaper rent outside the county area, particularly in the neighbouring counties of Meath, Kildare, Wicklow and Louth.