Elsewhere, a 12-year-old boy was among four victims in Kyiv, and three people were killed in Dnipro in the southeast.
And in Kharkiv, a drone strike injured a 77-year-old woman and a 66-year-old man, an official said.
Two cities in the south, Mykolaiv and Kherson, have been left without power, according to local officials.
President Zelensky said Ukraine’s armed forces had shot down 636 Russian drones over the previous day and night.
He said a report from Ukraine’s air force showed Russia launched nearly 700 drones, as well as 19 ballistic missiles and other cruise missiles during the night.
Zelensky wrote on X: “Another night that proves Russia does not deserve any softening of global policy or lifting of sanctions.
“Russia is betting on war, and that is exactly how the response should be – we must protect lives with all our might and press for peace with all our might as well.”
The president previously warned on Tuesday that Ukraine was facing a critical shortage of Patriot air defence missiles.
Ukraine’s Foreign Minister Andrii Sybiha said: “Such attacks cannot be normalised. These are war crimes that must be stopped and their perpetrators held to account.”
He called on other countries to “take immediate action” by issuing sanctions against Russia or offering packages of support for Ukraine.
“All decisions required to increase pressure on the aggressor must be unblocked now,” Sybiha wrote on X on Thursday.
