Famine was the main cause of death, and while it's difficult to give exact figures, most historians agree that nearly 1 million people died during the siege.
As you might expect from a siege like this, the number of deaths was astronomical. Famine was the main cause of death, and while it's difficult to give exact figures, most historians agree that nearly 1 million people died during the siege. At the start of WWII, Leningrad had a population of 3 million people. Some died of disease, others froze to death though most died of starvation.