The number of councillors was decreased by 4 after the Local Democracy and Boundary Commission for Wales recommended the change in a report in May 2019.

Bryan Davies, the County Councillor for Llannarth was chosen as the successor of ap Gwynn and leader of the Plaid Cymru group.

[3] In August 2021 Welsh Government accepted a number of ward change proposals by the Local Democracy and Boundary Commission for Wales, with slight modifications on Welsh language names for some wards.

Plaid Cymru won control of Ceredigion County Council in this election.

[4] Prior to this election, Mark Anthony Strong was the incumbent councillor for Aberystwyth North ward, while Alun Williams was the incumbent councillor for Aberystwyth Bronglais ward.

Keith Evans was the incumbent councillor for Llandysul Town ward prior to this election.

A by-election was held in the Lampeter ward following the death of Labour councillor Hag Harris, a member of the Council since its formation in 1995, and previously a member of Dyfed County Council since 1981.

[6] A by-election was held in the Llanfarian ward following the resignation of Liberal Democrat councillor Geraint Hughes who had captured the seat from Plaid Cymru in 2022.

[6] A by-election was held in the Aberystwyth Penparcau ward following the resignation of Plaid Cymru councillor Steve Davies who was first elected in 2012.

[6] A by-election was held on 17 October in the Tirymynach ward following the death of Liberal Democrat councillor Paul Hinge, who was first elected in 2008.