County Offaly population. It is the largest county by area and the third largest by population in the Midlands. Lusmagh Tullamore is the county town and largest town in Offaly and is the 30th largest in Ireland. Offaly borders seven counties: Galway, Roscommon, Tipperary, Laois, Westmeath, Kildare and Meath. The Slieve Bloom Mountains are in the southern part of the county on the border with County Laois. Offaly has the 24th highest county peak in Ireland. The highest point is Arderin () in the Slieve Blooms at . The Slieve Bloom Mountains contain the county's highest points including Stillbrook Hill and Wolftrap
County Offaly the county before joining Brosna near the town of Ferbane. The Grand Canal also runs across the county from Edenderry on the north-east to Shannon Harbour before joining the Shannon. The county contains many small lakes from Lake Boora to Pallas Lake and it also contains 42 hectares of swamp land. There are a number Eskers in the counties landscape including Esker Riada. Offaly largely comprises a flat landscape and is known for its extensive bog and peatlands. There are many large bogs in Offaly including the Bog of Allen, Clara bog, Boora bog and Raheenmore Bog which are spread