Tullamore, a division of King's County, was a UK Parliament constituency in Ireland, that returned one Member of Parliament from 1885–1918. Prior to the 1885 United Kingdom general election and after the dissolution of Parliament in 1918 the area was part of the King's County constituency.

Boundaries

This constituency comprised the north-eastern part of King's County now known as County Offaly. It consisted of the baronies of Ballycowen, Coolestown, Geashill, Kilcoursey, Phillipstown Lower, Phillipstown Upper and Warrenstown.

Members of Parliament

Elections

Elections in the 1880s

Elections in the 1890s

Elections in the 1900s

Elections in the 1910s