While it is impossible to have an accurate count, the best estimates are that about 1/3 of those killed have been combatants. The UN estimates 90% civilian casualties across all wars. The Iraq war was similar in that it involved urban, embedded terror groups and modern technology. The civilian casualty ratio was 77%. This war is in line with other conflicts of the past 50 years.
It is still a terrible tragedy. War is always a tragedy.