Staff at multiple WIN television newsrooms were pulled into meetings late on Wednesday and told their offices would be shut down on June 28, sources close to the broadcaster said.

Present and former WIN staff took to twitter to confirm the news that NSW newsrooms in Orange, Wagga, Albury and Queensland's Hervey Bay would close.

The closures will affect 35 to 40 staff, including casuals, across the local television news services.

WIN Central West journalist Alison Dance was among those who took to social media following the announcement.

"A devastating blow for regional Australia, WIN News closing four regional newsrooms," she posted to Twitter.

While her colleague in the Central West, Annabelle Amos said it a sad day for regional news.

"The camera operators, editors, and journalists from four WIN newsrooms were told that they wouldn't have a job to return to from next Friday 28^th," she posted to Twitter.

"It's a sad day for regional news, but we WILL push on and go out with a bang."

A WIN spokeswoman said in a statement the decision was "based on the commercial viability of funding news in these areas".

"Changing content consumption habits and increased competition from digital content providers, that don't face the same regulatory conditions that challenge traditional media, has led to a reduction in demand for local news bulletins in these regions," she said.

There have not been changes at WIN's other newsrooms, she said.

"WIN remains committed to local news and content but in a regional media environment that has its challenges and faces increasing program supply and infrastructure costs, WIN needs to continue to review its operating model to ensure the ongoing success of the business."

WIN TV is Australia's largest regional network, the affiliate of CBS-owned Network Ten and broadcasts in 29 markets across the country.