Coonty Roscommon (Erse: Contae Ros Comáin) is ane o the twenty-sax coonties o the Republic o Ireland, an also ane o the thirty-twa coonties o Ireland, locatit athin the province o Connacht. It wis namit efter the toun o Roscommon. The population o the coonty is 58,768 accordin tae the 2006 census. Roscommon is the 11t lairgest o Ireland’s 32 coonties in area, the fift least populous coonty in Ireland an haes the seicont least population densitie efter Leitrim. It's the third lairgest o Connacht’s 5 coonties in size and fowert lairgest in terms o population. The coonty borders every other Connacht coonty including Galway, Mayo, Sligo an Leitrim. In 2008 it wis revealed that statistically, Roscommon haes the longest life expectancy o any coonty on the island o Ireland. Lough Key in north Roscommon is noted for haein thirty-twa islands. This is, coincidentally, the number o coonties on the island o Ireland.