Elections to Durham County Council took place on 5 May 2005 as part of the 2005 local elections in the United Kingdom. The election also took place on the same day as the 2005 general election. This was the council's final election before it became a unitary authority as part of changes to local government in 2009, with the first elections to the new unitary council taking place in 2008. New electoral division boundaries were introduced for this election, with 63 divisions returning one councillor each using the first past the post voting system.