15 percent of households in the Shannonside region heat their homes by burning peat.
The figures from the CSO's 2022 Census show close to 8,500 families still use turf or peat briquettes for home heating across the three counties.
The figures released from the Central Statistics Office show that oil fired central heating remains the most common form of home heating, with 58 percent of households in Leitrim, Longford and Roscommon using them.
Peat fuels are the second most common form of heating in the region, with 8,500 homes using them in ranges, stoves and fires. Four and a half thousand homes in the three counties use electric heating systems such as storage heaters or plug in devices, accounting for 8 percent of all households.
That's followed by coal fired heating, where 5 percent of families burn the product for heating purposes.
Wood burning systems and natural gas heating account for close to 1,500 homes each.
Meanwhile, those using peat briquettes could soon face further price increases as Ireland's last remaining peat briquette plant in the country closed its doors today. Operations at Derrinlough peat factory in Co. Offaly was due to wind down by the end of the year, but has ceased earlier than planned.