This constituency comprised the northern part of County Meath.
1885–1922: The baronies of Fore, Kells Lower, Kells Upper, Morgallion, Slane Lower and Slane Upper, that part of the barony of Navan Lower not contained within the constituency of South Meath, and that part of the barony of Skreen contained within the parishes of Ardmulchan and Athlumney.