Main Street Longford town 1901 Longford (Irish: An Longfort) is the county town of County Longford in Ireland. It had a population of 10,952 at the 2022 census.It is the biggest town in the county and about one third of the county's population lives there. Longford lies at the meeting of Ireland's N4 and N5 roads, which means that traffic travelling between Dublin and County Mayo, or north County Roscommon passes around the town. Longford railway station, on the Dublin-Sligo line, is used heavil