There has been a small increase in assaults around Sydney's Star casino since the New South Wales Government introduced lockout laws at other nightspots in the city, new crime statistics show.

Key points: Bureau of Crime Statistics show assaults up by two per month

Bureau of Crime Statistics show assaults up by two per month Casino patrons most common victims of those assaults

Casino patrons most common victims of those assaults Decrease in assaults in the Kings Cross and CBD areas since lockout laws introduced

Decrease in assaults in the Kings Cross and CBD areas since lockout laws introduced No increase in assaults in Newtown

When the Government announced the 1:30am lockout and 3:00am last drinks policy for Kings Cross and the CBD in 2014, critics said the violence that prompted the laws would only be pushed to other areas of Sydney, like the casino or Newtown, in the inner-west.

Bureau of Crime Statistics (BOCSAR) director Don Weatherburn said in the 22 months since the laws were introduced, the number of non-domestic assaults around the Star casino precinct at Pyrmont had increased by about two a month, on average.

"It's not a big increase," Dr Weatherburn said.

"It's gone up by about two additional assaults per month around the Star casino since the lockout laws began."

However, Dr Weatherburn also said the increase was dwarfed by the drop in violence in the areas where the lockouts are in place.

"It's worth pointing out, the increase at that location is nowhere near as big as the decrease that's happened in Kings Cross and the CBD," he said.

He said 49 per cent of assaults that happened in Pyrmont occurred on the Star casino premises and casino patrons were the most common victims of those assaults.

In about a third of incidents, the assault occurred while the offender was being evicted from the casino or after he or she had been evicted.

In a statement, the casino said, "it is not proved that lockouts have resulted in increased assaults at the Star".

"According to BOCSAR, the reported increase in assaults for the two years post-lockouts is also 'not very substantial'.

"Importantly, the Star's records show that from 2014 to 2015 the number of incidents has dropped.

"The NSW Police also confirmed earlier this month that anecdotal evidence suggests a decline in the number of assaults in recent times directly linked to the Star Casino complex."

Increase in violence confined to the casino

Dr Weatherburn also said there had been no increase in assaults in Newtown or other nearby suburbs during the same period.

"We don't see any increase in any of the suburbs near or far," Dr Weatherburn said.

"We're not only looking at the perimeter surrounding the CBD and Kings Cross, we're also looking at Double Bay, we're looking at Bondi Beach, we're looking at Newtown, we're looking at all of those sites.

"This [the Star], is the only one so far where you can see an increase."

Dr Weatherburn said he could not pinpoint why that was the case.

"I suppose it's close [to the city]," he said.

"It may have to do with services that are being offered by the Star casino to bring clients in, I can't be sure what the reason is at the moment.

"But it was always a likely possibility because it's an area that, prior to the lockout, had significant problems with assault."

Dr Weatherburn said it was not for him to say whether the lockout laws are a good policy.

"They have been a success in reducing assault," he said.

"Were they worth it? That's really a political judgement.

"I mean obviously there are adverse effects, businesses in Kings Cross haven't done as well if I read the newspapers correctly, but it's not for me to say whether the gain is worth the pain."

Government says statistics prove critics wrong

NSW Police Minister Troy Grant said the statistics showed that critics were wrong to claim the lockout laws would lead to a spike in assaults in suburbs neighbouring the CBD.

"Advocates were out there saying the lockout laws would create mayhem and chaos in the surrounding areas, which the statistics have not borne out," Mr Grant said.

However, Mr Grant refused to reveal whether he thought the laws should be extended to the casino precinct.

"Those statistics ... will be provided to [former High Court judge Ian Callinan QC], who is doing the review," he said.

"He's the appropriate person to draw those conclusions."