SLIGO, a county in the province of Connaught, Ireland, 31 miles in length, and 29 in breadth; bounded on the east by that of Leitrim, on the west by the county of Mayo, on the north and north-west by the western ocean, and on the south and south-west by Roscommon and Mayo. It contains 11,500 houses, 41 parishes, 60,000 inhabitants, and sends two members to parliament.