Local government elections are held biennially, on the third Saturday in October. The Mayor and Councillors are each elected to four-year terms. Half of all Councillor positions are eligible for election every two years and a Mayoral election is held every four years.
The City of Wanneroo elections are run by the Western Australian Electoral Commission, which appoints a Returning Officer to oversee the elections, including taking candidate nominations and supervising the count during the election.
The next ordinary local government election for the City will be held on Saturday, 16 October 2021.