The next Dáil will have 174 TDs, 14 more than the current one, the Electoral Commission has announced.
It has also decreed the number of constituencies will rise from 39 to 43.
Dublin Fingal will be split into two new seats - Fingal East and Fingal West.
Overall, four new seats have been added to Dublin.
The counties of Wicklow and Wexford will be divided into three constituencies; there will be Wicklow, Wexford and also a new Wicklow/Wexford seat that straddles the two counties.
Cork gets two extra seats in the North Central and South Central areas.
Tipperary is split into two different constituencies, as are Laois and Offaly.
Kildare North gets an extra seat, as does Galway East, Mayo and Meath East - which takes back territory from Louth.
Here is a breakdown on how many seats each constituency will have at the next election:
The rise in the number of TDs is a constitutional requirement; Bunreacht na hÉireann mandates there should be one TD for every 20,000 to 30,000 citizens.
Main image: Leinster House.