The dramatic rise in case numbers to at least 92,264 comes on top of another grim milestone as the state reported a record 22 lives lost in the 24 hours to 8pm on Wednesday.
NSW Health cautioned on Thursday that some of the daily case total included people reporting positive rapid antigen tests (RATs) on multiple days and possible follow-up positive PCR tests.
The number includes 61,387 positive RAT results covering the period since January 1, including 50,729 in the last seven days, as well as 30,877 PCR tests.
Earlier on Thursday, Customer Service and Digital Minister Victor Dominello said 82,000 positive RAT results from tests taken since January 1 had been uploaded to the Service NSW app or website.
The reporting system for positive RAT results went live on Wednesday morning and, while the requirement only became mandatory on the day, NSW residents were asked to add tests taken since the start of the year.
From January 19, the government will begin imposing a $A1000 ($NZ1063) fine on anyone who does not report a positive RAT result.
Mr Dominello admits that will be very difficult to do but the government had to send a message that reporting a positive result was important.
"It's almost going to be impossible in many ways to enforce," he told Nine Network.
"But the majority of the states and territories in the country have gone down the path of issuing a fine or putting a fine in place - Tasmania, South Australia, Northern Territory, ACT - and some have chosen the other path of just saying please do it."
Mr Dominello said registering a test result was mainly about connecting infected people with any health care need they might need or federal government financial assistance.
Prior to the new RAT reporting regime, the state opposition had warned authorities were "flying blind" without an accurate picture of the spread of the virus in the community.
But actually finding a RAT remains a challenge for many, until more supply gets into the system.
Premier Dominic Perrottet has said the government is considering a voucher-style system to distribute the tests.
Some 21.6% of people aged 16 and over have received their third dose of a Covid vaccine, while 93.7% have received their second jab.
New pandemic orders in Victoria
In neighbouring Victoria, there were 37,169 new Covid cases and 25 deaths, as new pandemic orders come into effect across the state.
The new infections include 16,843 from rapid antigen tests and 20,326 from PCR tests, the Health Department said on Thursday.
There are 953 patients in hospital, including 111 in intensive care of which 29 require ventilators. The state is managing 221,726 active cases.
The number of Victorians over 18 who have received a booster vaccine has risen by 2% to 20%.
New rules requiring hospitality and entertainment venues to close indoor dancefloors came into effect on Thursday. Dancefloors at weddings will be permitted as guests can be easily tracked down.
Mandatory booster arrangements have also kicked in, requiring key workers currently eligible for a third dose to get it before February 12.
The rules apply to disability, health and aged care workers, as well as those working in emergency services, corrections, quarantine and food distribution.
