The 2021 Norfolk County Council election took place alongside the other 2021 local elections. 83 of the 84 seats to Norfolk County Council were elected. One seat, Sewell in Norwich, had its election delayed to June 17 after Eve Collishaw, the Conservative candidate, died during the election campaign
The Conservative Party retained control of the council and increased its majority, winning 58 seats with around the same vote share as in the 2017 election: the Liberal Democrats lost three seats in the north of the county, and Labour took losses to the Conservatives in the port towns of King's Lynn and Great Yarmouth as well as three losses to the Green Party who regained ground in southern and central Norwich.
In between the 2017 election and the 2021 election, the following council seats changed hands:
|-
Division results
Division results
Division results
Division results
Division results
Due to the death of Evelyn Collishaw, the Conservative candidate, after the close of nominations, the election for Sewell division was delayed until 17 July.
Division results
Vote share changes are compared to the 2021 election, not the August 2024 by-election.