County Roscommon

County Roscommon (Irish: Contae Ros Comáin) is a county in Ireland. It is part of the province of Connacht and the Northern and Western Region. It is the 11th largest Irish county by area and 26th most populous. Its county town and largest town is Roscommon. Roscommon County Council is the local authority for the county. The population of the county was 70,259 as of the 2022 census.

County Roscommon is named after the county town of Roscommon. Roscommon comes from the Irish Ros meaning a wooded, gentle height and Comán, the first abbot and bishop of Roscommon who founded the first monastery there in 550 AD.

County Roscommon has an area of 2,548 square kilometres (984 sq mi). Lough Key in north Roscommon is noted for having thirty-two islands. The geographical centre of Ireland is located on the western shore of Lough Ree in the south of the county.

Roscommon is the third largest of Connacht's five counties by size and the second-smallest in terms of population. It ranks 11th in size of Ireland's 32 counties, but 26th in terms of population, making it the 3rd most sparsely populated county after Leitrim and Mayo. The county borders every other Connacht county: Galway, Mayo, Sligo, and Leitrim, as well as three Leinster counties: Longford, Westmeath, and Offaly. In 2008, a news report said that statistically, people from Roscommon have the longest life expectancy of any county on the island of Ireland.

Seltannasaggart, which is located along the northern border with County Leitrim, is the tallest point in County Roscommon, measuring to a height of 428 m (1,404.20 ft).

According to the 2022 census:

There are nine historical baronies in County Roscommon.

North Roscommon