2019 Monaghan County Council election

An election to all 18 seats on Monaghan County Council was held on 24 May 2019 as part of the 2019 Irish local elections. County Monaghan was divided into 3 local electoral areas (LEAs) to elect councillors for a five-year term of office on the electoral system of proportional representation by means of the single transferable vote (PR-STV).

Boundary review
Following the recommendations of the 2018 LEA boundary review committee, the boundaries to the LEAs used in the 2014 elections were adjusted with the move of one seat from Ballybay–Clones LEA to Monaghan LEA.

Overview
Bucking a trend elsewhere Sinn Féin slightly increased their vote in County Monaghan. However this did not prevent the party from losing a seat in the Carrickmacross–Castleblayney LEA but Sinn Féin would still remain the largest party. The Sinn Féin loss was to former Carrickmacross town councillor, Mary Kerr-Conlon. However the Fine Gael vote in County Monaghan fell by over 5% a consequence of Hugh McElvaney retaining his seat in Ballybay-Clones as an Independent.