In a blitz launched over six weeks across the state, NSW Police Rural Crime Prevention Team in partnership with Crime Stoppers are aiming to stamp out the rising numbers of livestock and firearm theft, as well as illegal hunting and trespassing.

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"If you see something, say something," NSW Assistant Commissioner Geoff McKechnie said.

More than 20,000 individual head of stock was stolen from NSW farms in 2018, with the loss of sheep and cattle costing farmers over $3.2 million.

"This is our latest effort in the fight against rural crime and with the resources of Crime Stoppers coming on board we are looking to engage more with the community and to open up that information flow from the community to police," Assistant Commissioner McKechnie said.

"Often farmers know who is committing these rural crimes, I often get feedback from farmers and landowners who have stock stolen that this has been going on for years, that it is the same family, same individual or group of individuals."

Crime Stoppers director Peter Price said this is the first time they are taking on a rural crime specific campaign.

"This is all about helping people in the bush, they have enough challenges as it is with the weather and the drought, the last thing they need is for their equipment or their livestock to be stolen," he said.

Detective Sergeant Damian Knott said there is a "misconception" that police are "all-knowing".

"My message would be that please don't assume that we know."