A mass grave the SDF discovered there last month showed there were other dangers in the enclave, though it has released no details on the identities of the victims or how they died.
Civilians made up more than half the people leaving Baghouz, the SDF said, including Islamic State victims such as women from the Iraqi Yazidi sect whom the jihadists had sexually enslaved.
Thousands of the group's unbending supporters also abandoned the enclave while still vowing their allegiance to a ruined caliphate and showing no remorse for its victims.
At displacement camps in northeast Syria where they were sent by the SDF, the hardliners, including many foreign women who came to Syria and Iraq to marry jihadists, had to be kept away from other, often traumatized, residents.