The report says the worst-affected part was the capital, Baghdad, where 418 people were killed.
It says 2,133 people were wounded in September violence.
Iraq is going through its worst surge of violence since 2008, following a deadly crackdown by the Shiite-led government on a Sunni protest camp in northern Iraq in April.
More than 5,000 have been killed since then.
Updated on: October 01, 2013 18:06 IST
