The first election to Pembrokeshire County Council, was held in January 1889.^[1] It was followed by the 1892 election. The county was divided into numerous single member wards with two or more councillors elected to represent Tenby and Pembroke Dock.

1889 was a landmark year in the history of Welsh Liberalism, a coming of age symbolized by the triumph across Wales of Liberal candidates in the inaugural county council elections. The Liberal triumph in Pembrokeshire was not as complete as in other Welsh counties but was nevertheless significant. In the north of the county a number of landed gentry were defeated including James Bevan Bowen of Llwyngwair, former MP for the county of Pembrokeshire. There were only nine unopposed returns, most of whom were Liberals.

In addition to the 51 councillors the council consisted of 16 county aldermen. Aldermen were elected by the council, and served a six-year term. Following the election of the initial sixteen aldermen, half of the aldermanic bench would be elected every three years following the triennial council election. After the initial elections, there were sixteen aldermanic vacancies and the following Alderman were appointed by the newly elected council (with the number of votes cast recorded in each case). A second vote was held to determine which aldermen should retire in three years.^[2]

Elected for six years

• H. Allen, Liberal (elected councillor for Carew) 42
• Lord Kensington, Liberal (elected councillor for St Ishmaels) 42
• J. Bevan Bowen, Conservative (defeated candidate at Nevern) 31
• Jno Thomas, Llether 30, Liberal
• W. Gibbs, Hodgeston 29, Liberal
• W. Williams, Haverfordwest 27, Liberal
• N.A. Roch, Tenby, Conservative (defeated candidate at Tenby) 24
• Captain Higgon 23, Conservative (elected councillor for Wiston)

Elected for three years

• W.E. Seccombe, Liberal (elected councillor for Pembroke Dock) 32
• G.P. Brewer, Narberth 29, Liberal
• R, Thomas, Trebover 29, Liberal
• W. Evans, Bletherston 28, Liberal
• Ben Rees, Granant 28, Liberal
• H. Jno Thomas, Lochturfin 28, Liberal
• W. Watts Williams, St David's 28, Liberal
• Sir Charles Philipps, Conservative (elected councillor for Slebech and Martletwy) 22

Five vacancies were caused by the election of aldermen.