2017 Cumbria County Council election

The 2017 Cumbria County Council election took place on 4 May 2017 as part of the 2017 local elections in the United Kingdom. All 84 councillors were elected from electoral divisions which return one county councillor each by first-past-the-post voting for a four-year term of office.

Allerdale District
(16 seats, 16 electoral divisions)

By-elections between 2019 and 2021
The consultation on local reorganisation in Cumbria meant that Cumbria County Council elections did go ahead as planned in 2021. However, elections for the vacant seats on councils were held on Thursday 6 May 2021. These were - Brampton, Cockermouth North, St John's & Great Clifton and Ulverston West.

On 17 June 2020, a by-election of Corby & Hayton was announced after the resignation of Independent councillor William Graham. A by-election took place on 26 August to fill the vacant seat, and was won by the Liberal Democrats.