John Holmes, U.N. emergency relief coordinator, gave the toll to representatives of donor countries while launching a U.N. funding appeal of $604 million for Afghanistan for 2009.
"According to U.N. figures, over 2,100 civilians were killed as a result of armed conflict in 2008, which represents an increase of about 40 percent from 2007," Holmes said in a speech, the text of which was issued to reporters in Geneva.
He did not say whether the majority of civilian casualties were due to Taliban militants or U.S.-led occupation air strikes in the country. US Air strikes which have killed civilians have provoked anger among Afghans and resentment against the presence of occupation troops.
"The armed conflict is increasingly characterized by the use of suicide bombings, improvised explosive devices, kidnappings and air strikes, all of which tend to increase civilian casualties," said the U.N. funding appeal document.