The Labour Party maintained its position from the 2012-2017 term, with the Independents losing many seats in the rural areas of Carmarthenshire to Plaid Cymru.

A Plaid Cymru-Independent coalition was formed after the election, with Emlyn Dole remaining as the Leader of Council.

[2] No Overall Control Retained Plaid Cymru had gained Cilycwm at a by-election following the death of the previous Independent member.

However, the party did not field a candidate resulting in the seat being captured by an Independent, who had finished second at the by-election.

A by-election was held in Saron on 19 July 2018 following the death of Plaid Cymru councillor Alun Davies.