The Mount Remarkable District Council has formed a working relationship with the Streaky Bay District Council, following a recent visit to the West Coast.
The tour for councillors and senior staff was organised to provide the opportunity to collaborate on business activities and initiatives.
The councils are similar in size and share a likeness in aspects such as tourism demand, road networks, population, rate base and corporate organisational structure.
Mount Remarkable mayor Phillip Heaslip said the trip was beneficial.
"In all my time on council, this is the first time we have had all of the councillors come together in such a positive way, and what we learnt from the councillors at Streaky Bay has given us greater reassurance that we are not alone in some of the challenges we face," he said.
"I am also extremely pleased in how we as councillors and senior staff have represented our community and council and working as a team."
The council said staff had already started implementing new systems and processes obtained from the trip, aimed at better informed reporting, increased operational efficiencies and new forms of engagement.
Streaky Bay chief executive officer Karina Ewer said they looked forward to continuing the relationship with Mount Remarkable.
"We have considered how councils best work with and engage our communities and we have had some very open and honest discussions about what we are doing well and the areas we need improvement in," she said on her Facebook page.
"Both CEOs originally got together to see what we might learn from each other but as our meetings and interactions progressed the idea of a sister city relationship has become a very strong.
"The collaboration and idea sharing achieved...has been a great opportunity for us all."