South Park is best known as the animated Rocky Mountains town and the adventures of four crude and violent fourth-grade boys, a far cry from the leafy shores and affluent apartments of South Perth, but they may soon have the same name.

City of South Perth councillors have voted to take the name South Park if a merger with Victoria Park goes ahead.

South Perth Mayor Sue Doherty acknowledged the name was more associated with the long running US TV series, but said it emerged as the most popular option during a public consultation process.

"I've seen the show, I used to watch it with my son," Ms Doherty told 720 ABC Perth.

She said the name emerged as the simplest way to combine the names of the two councils.

"The City of South Perth and the Town of Victoria Park have been working collaboratively together for an amalgamated council for some time now," she said.

"We came up with a series of names that we put out to the community, and one of the ideas that came from left field was South Park, and it was a popular choice."

Other names considered were South Bank (which Victoria Park councillors favoured), Yarigan (Derbarl Yarigan is the Whadjuk Noongar term for the Swan River), Curtin and Twin Rivers.

"South Park was a popular choice with the people, so we thought we would run with it," Ms Doherty said.

The name also has a historic connection to the area, with an early subdivision named South Park Estate, long before the TV series launched in 1997.

The idea drew a mixed response to the 720 ABC Perth SMS line:

I'm a resident and I love it!: Justine Naming it South Park is ridiculous. Naming a city isn't a high school project. We will be a laughing stock: James South Park no! Yarigan YES! Let's have more Indigenous naming: Janice I think the new merged council being called South Park is great...think of the towns of Springfield (from the Simpsons) - the show certainly put them on the map, and there has been very little negative consequences. ..local businesses have even cashed in renaming themselves: Sean

The cartoon South Park is set in Colorado's Rocky Mountains. ( South Park Studios )

The name change has attracted national attention, but will only take place if the amalgamation goes ahead, a process that is still mired in argument with the State Government.

The City of South Perth today announced it would be joining with other Perth local governments to mount a legal challenge against the mergers.

Sue Doherty said the South Perth council had entered into voluntary merger plans with Victoria Park but that Local Government Minister Tony Simpson's plans to abolish the council and extend the boundaries of Victoria Park were unacceptable.

"We want our communities to be able to have a say in whether this amalgamation goes ahead or not," she said.