Of the new cases confirmed on Sunday, 1,850 were in the central region of Mazowieckie, which contains the national capital Warsaw.
Meanwhile, 1,150 new infections were reported in the northern province of Kujawsko-Pomorskie, which includes the historic city of Toruń.
The country's southern Silesia coal mining region had the third-highest number of new infections confirmed by officials on Sunday, at 1,134.
The latest deaths in Poland’s coronavirus outbreak are 83 people with pre-existing medical conditions and four who died directly because of COVID-19, the Polish health ministry said in a tweet.
On Friday, October 23, Poland reported a record 13,632 new cases, the most since the pandemic hit the country in early March.
On Saturday, October 24, the country reported its highest daily toll of 179 deaths related to the coronavirus.
11,887 in hospitals, 446,154 quarantined
The health ministry announced on Sunday morning that 11,887 COVID-19 patients were in hospitals nationwide, 947 of them on ventilators, with a further 446,154 people quarantined for possible coronavirus exposure, and 49,174 under epidemiological supervision.
Meanwhile, 112,619 people have now recovered from COVID-19 throughout the country, including 3,275 over the last 24 hours, the health ministry also said.
Tougher measures to battle COVID-19 officially came into effect in Poland on Saturday.
Following a surge in cases, Prime Minister Mateusz Morawiecki announced on Friday that the whole country would be covered by restrictions that used to apply in areas most affected by the coronavirus.
Between 8am and 4pm, children up to 16 are allowed to leave their homes only under the supervision of an adult.
Pubs, restaurants and cafes will for two weeks only be able to provide take-aways and delivery orders.
Meetings and gathering in groups of more than five are forbidden. Meanwhile, classes for older primary school pupils will be held remotely.
Also, the government appealed to people aged over 70 not to leave their homes unless necessary.
Source: IAR, PAP