The unvaccinated man from Western Sydney had serious underlying health conditions.
A man in his 40s and a man in his 70s, both from southwest Sydney died at Liverpool Hospital.
A man in his 90s is the third person to die linked to the St George aged care facility in Bexley.
Of the nine deaths reported today, seven were not vaccinated, one had one dose, and one had two doses.
Premier Gladys Berejiklian said the state had also reached the milestone of 75 per cent of people having had at least one dose of the vaccine.
She called on particular suburbs in Greater Sydney which are lagging in vaccine take-ups.
“While parts of western Sydney and south-western Sydney are demonstrating outstanding results, there are other parts of Greater Sydney where we’d like vaccination rates to go up,” Ms Berejiklian said.
There are currently about 11,000 people with coronavirus being cared for by NSW Health.
Ninety per cent are being cared for in the community.
There are 1136 in hospital with coronavirus, and 194 in intensive care.
Seventy-eight of those require vaccination.
“Of the 194 people in ICU, 158 are not vaccinated,” Deputy Chief Health Officer Marianne Gale said.
New wards to deal with COVID-19 surge
In Camden, the five-day case average has more than doubled in the past three weeks to about 20 a day.
The modelling also reveals Sydney’s 11-week lockdown and vaccination drive has prevented 5808 deaths and 580,000 COVID-19 infections between June and December in hotspot areas of western and south-western parts of the city.
The institute is predicting case numbers the 12 local government areas of concern could reach 2000 per day by next week.
It states that if restrictions and vaccinations continue “diagnoses and hospitalisations in Sydney will continue increasing for several weeks before reaching a peak and declining once sufficient vaccine-acquired immunity is achieved”.
Yesterday NSW recorded 1220 new local cases and eight more deaths.
There are now 192 people in intensive care, 75 of whom require ventilation.
Around 74 per cent of residents in NSW have had one dose of the vaccine, while in Blacktown residents there have hit 85 per cent. In Campbelltown, 82 per cent have had their first dose while in Canterbury-Bankstown more than 76 per cent have come forward for their first shot.