Councils in country Victoria are facing a review of their operations and viability by the Victorian Electoral Commission (VEC).

The Commission has launched a review of the structure of the Gannawarra, Mildura and Yarriambiack shires in the state's north, aiming to ascertain whether there is fair representation for all ratepayers.

The review will consider the number of councillors, subdivisions and ward boundaries.

Submissions will be accepted from next week, public information sessions to be held later this month.

A preliminary report outlining proposed council structures is expected form the VEC in September, and final report with recommendations will be handed to the state Minister for Local Government in November.

Any adopted changes will take effect next year.

The latest round is part of an ongoing review of all Victorian municipalities. A table of which councils are up next and avenues for providing submissions are available on the VEC website.