Chief Health Officer Brett Sutton said as of 6am this morning, NSW cross-border community local government areas were also declared orange.

"But I can reassure locals that the border bubble is still in place - so for locals in those border bubble LGAs, they can cross the border without a permit, but they will need to carry proof of their address such as a driver's licence," he said.

"If cross-border community members have been in an orange zone, outside of the cross border area, you can enter Victoria without a permit only if you've had a negative COVID-19 test result since you left the orange zone.

"If not, you'll need to enter Victoria with an orange zone permit, isolate and get tested within 72 hours and stay isolated until you receive a negative result, that's the standard for anyone arriving from an orange zone.

"And for everyone else - visiting friends, family, or enjoying a holiday - orange zones on the border are the same as any other orange zone in Australia, you need to obtain that permit to re-enter Victoria.

"You don't need to immediately get tested crossing into Victoria; you've got 72 hours to get tested."

Mr Sutton gave no indication of when Victorians stuck in Queensland could get back and only test negative rather than isolate for 14 days as per the red zone designation.

"If a red zone turns orange, those individuals will be free to come to Victoria with the obligations of the orange zone," he said.

NSW Premier Gladys Berejiklian said she was "not surprised" Victoria had made all of regional NSW 'orange' but wasn't happy about it.

"Why would you lock out people from a state when there is not hotspot associated in that region, when there is no concern?" she said.

NSW police have detected people from Sydney in regional NSW including at Dubbo Western Plains Zoo.

"These two examples are just a couple," Deputy Commissioner Gary Worboys said.

Health Minister Martin Foley pointed to NSW police enforcement as evidence of people moving around when asked to justify why the border zone was turned orange suddenly when Sydney was locked down.

"What changed is the public health advice based on the increasing numbers of COVID cases in NSW," he said.

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The tourism impact was raised with Mr Foley.

"Well, we had very productive discussions with the Border Commissioner and the CEOs of local governments on both sides of the border," he said.

"There is no change to the border bubble.

"The truth is, that just beyond the border bubble, substantial parts of NSW are a risky place to be.

"We will protect the spirit and the letter of the border bubble ... if you live and reside on either side of the Murray, you have movement freely by just showing your address.

"If you have left that border bubble to go into a risky zone, then you bring with you that risk.

"And this is all about Victorians, protecting our hard-won status."

Prime Minister Scott Morrison said states had agreed at National Cabinet to make lockdowns a "last resort".

Mr Foley said his government had only ever locked down as a last resort.