The number of councillors and wards in Cherwell will be reduced if a review is confirmed by the Boundary Commission.
The number of councillors will be cut from 50 to 48 and the 28 current wards will be reduced to 16 if the plan agreed by councillors on Monday is agreed by the Local Government Boundary Commission.
The plan aims to provide a fairer system with three councillors for each ward.
Each councillor would represent an average of 7,740 electors. Currently electors in Banbury are split across six wards which are represented by 16 councillors. The new boundaries would give 15 members over five wards.
In Bicester there would be 12 councillors – one more – in four rather than five wards and in Kidlington there would be one extra councillor (totalling six) for its two wards.
In rural areas the 15 wards would be reduced to five, with 15 rather than 18 councillors.
Council leader, Barry Wood, said: “There are 28 wards, some represented by one member and others by as many as three so to make it equal we are undertaking this review.”