*A toll is a total number of deaths, accidents, or disasters that occur in a particular period of time.
Russia launched on Feb 24 what it calls a "special military operation" to demilitarize its smaller neighbor and protect Russian-speaking communities. Ukraine and its Western backers accuse Moscow of waging an imperial-style war of conquest.
The Office of the U.N. High Commissioner for Human Rights, citing its monitoring mission in Ukraine, said on Monday 5,587 civilians had been killed and 7,890 wounded between Feb 24 and Aug 21, mainly from artillery, rocket and missile attacks.
UNICEF, the U.N. children's agency, said at least 972 children have been killed or injured over six months of war.
"The use of explosive weapons has caused most of the child casualties. These weapons do not discriminate between civilian and combatant, especially when used in populated areas as has been the case in Ukraine," the agency's executive director, Catherine Russell, said in a statement.
Separately, General Valeriy Zaluzhnyi - Kyiv's army chief - provided what appeared to be the first public Ukrainian military death toll, saying nearly 9,000 soldiers had died in action.
Russia has not said how many of its soldiers have been killed. Ukraine's General Staff have estimated the Russian military death toll at 45,400.