Narromine Racecourse and Showground broken into, vandalised and robbed.

Just weeks after the vandalism attack on the racecourse, the prominent Narromine facility was vandalised and robbed on Monday night.

The Narromine Shire Council, Race Committee and Show Committee were downhearted to learn of the extensive damage yesterday morning.

Narromine Shire Mayor, Bill McAnally and secretaries of the race and show committees, Sarah Masonwells and Jenny Ballhausen are deeply disappointed.

Cr McAnally said council would have to cover the insurance excess.

"Insurance covers it, but we're looking at an excess especially because we've recently claimed all the windows that were broken," he said.

"It's a bit heartbreaking, they destroyed a lot of stuff that's of no use to them."

The offices at the showground and racecourse were ransacked. So far four televisions, a computer and a printer from the race club have been recorded missing.

"It seems like someone has come in with the intent to do it," Mrs Masonwells said.

"What do you do? There's obviously no respect for other people's property."

Mrs Ballhausen agrees it's a disrespectful attack.

"People need to take some responsibility and community pride in themselves," she said.

"These people (on the committees) are all volunteers trying to do something for the community."

The attack was a sour way to end a very successful week following the 2014 Narromine Show.

"It's a dampener on a hugely successful week. They obviously don't contribute to the Narromine community in any way," Mrs Ballhausen said.

The secretary's office was graffitied and ransacked although there was nothing obviously missing.

Cr McAnally is calling on the Narromine community to report any information.

"If someone knows something in the community and they don't want to call the police they can call me. But please call the police," he said.

"We've had enough vandalism in our small town."

The onus of the attack now comes on the council, race and show committees on whether to invest in extra security at the grounds.

"We'll look at the extra security. The extra costs come down to council," Cr McAnally said.

Mrs Masonwells said the race club would have to look at alarming its premises, along with their usual security measures which include never keeping money on the site.

Police and forensic officers are continuing investigations at the site.

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