The Walcha LGA was moved from the Northern Tablelands into the Tamworth region at the 2015 poll.

Mayor Eric Noakes said the area's small population, which was just over 3000 at the 2016 census, was contributing to its constant movement.

"My take on it all is that with our population size we seem to be the one that gets shifted around the make up the numbers and that's understandable with the way our electoral system works," he said.

"We're probably used to it and knew it would happen one day."

He doesn't expect the change to be too disruptive, and said the fact both electorates are currently governed by a Nationals member should make the transition even smoother.

The Electoral Districts Redistribution Panel determination was confirmed on Thursday, but had appeared very likely for a number of months.

As a result councils, including Walcha's, had already begun preparing for life in a new electorate, with a new MP.

"We catch up with Adam [Marshall] occasionally, not so much around this because there's so going on at the moment and we're still a little way off it happening," he said.

"But we've had a chat around what it will mean."

He said Walcha Shire Council has had an excellent relationship with Tamworth MP Kevin Anderson and hopes to enjoy something similar with Mr Marshall.

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Mr Anderson said he has thoroughly enjoyed representing Walcha and will continue to do so until the next election, but will have to begin shifting his attention to the Liverpool Plains LGA.

The Tamworth electorate will take in the region at the next election, which is a move that makes sense according to Liverpool Plains Shire Council (LPSC) mayor Doug Hawkins.

"It makes logistical sense for use to be within the Tamworth boundary because we're closer, we're a long way from the Upper Hunter," he said.

"We've done pretty well with the representation from the members of the Upper Hunter, and I don't have any problems at all working with Kevin in Tamworth."

Mr Anderson has worked closely with LPCS in the past, particularly in the fall-out from former Upper Hunter MP Michael Johnsen's resignation earlier this year following a sexting scandal.

"Over the last couple of months, obviously with the situation in the Upper Hunter I have assisted Quirindi and the Liverpool Plains Shire Council on a number of occasions," he said.

"And Werris Creek is part of the Tamworth electorate and I love working with Werris Creek, it's a great community so to be able to extend that through to Quirindi will be a great privilege."

Walcha LGA's inclusion in the Northern Tablelands means that electorate will now grow in size to 59,412 square kilometres - the third biggest in the state.

Seven LGAs will exist within its boundaries, and it will have an estimated 58,027 voters.

MP Adam Marshall said he thought the change was a good decision and he was up to the task of representing even more people.

"I welcome the return of the Walcha LGA into the Northern Tablelands - it makes sense as it once again links Walcha to communities of similar cultural and economic interest," he said.

"The Northern Tablelands is already the third-largest electorate in the state, behind Barwon and Murray, and while this determination means the electorate grows in size again, I'm pleased no communities will be lost to other seats."

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