Despite its name, Llanelli Rural covers large parts of the Llanelli urban area, including Bynea, Llwynhendy, Cefncaeau, Pemberton, Bryn, Cwmcarnhywel, Cwmbach, Cynheidre, Penygraig, Penceilogi, Dafen, Felinfoel, Swiss Valley, along with the villages of Pont-Henri, Pontiets, Pwll, and Five Roads, as well as a number of hamlets.

[2] Llanelli Rural is bordered by the communities of: Llanelli; Pembrey and Burry Port Town; Trimsaran; Llangyndeyrn; Pontyberem; Llannon; and Llangennech, all being in Carmarthenshire; and by: Gorseinon; Llwchwr; Gowerton; Llanrhidian Higher; and Llanrhidian Lower, all being in the City and County of Swansea.

Councillors Mina Najmi and Ella Simmons left the council in 2020, leading to a by-election for their Pemberton ward seats on 6 May 2021.

[7] Following the death of Carol Rees in 2021, Alexander Evans (originally independent but joined Plaid Cymru soon after) was co-opted to serve as a member for the Glyn ward.

Although originally elected under a Labour ticket, Sharen Davies and Jason Hart left the party and became independent members in 2018 and 2021 respectively.