The number of Iraqis killed last month dropped to 718, according to Associated Press data. This is the lowest monthly death toll since just before the 2006 bombing of a Shiite shrine provoked a vicious cycle of retaliatory sectarian violence.
The figures come as the American military says violence has declined to levels not seen in nearly two years.
It was the third consecutive monthly drop in the death toll of Iraqi civilians and security forces since August, when a massive suicide bombing targeting minority Yazidis in northern Iraq helped push the figure to at least 1,956. Some 500 are thought to have perished in the bombing of the Yazidis.
At least 1,023 Iraqis died in September, 911 in October and 718 in November, the lowest since January 2006, when 615 Iraqis died.
The number of U.S. troop deaths also fell for the sixth consecutive month, with at least 37 recorded in November. That was the lowest number since March 2006, when 31 American service members died.
The U.S. army has said the fall in the number of deadly attacks is largely due to a troop buildup this summer of some 30,000 additional soldiers.