Forty families were cleared to return after they passed background checks and their neighborhoods were deemed safe, Suhaib al-Rawi, governor of the western Anbar province, said.
In total 236 families returned on Saturday to Fallujah and surrounding suburbs, he added.
Fallujah, 40 miles (65 kilometers) west of Baghdad, had a pre-conflict population of more than 300,000 people.
It was declared "fully liberated" in late June after a month-long operation by Iraqi forces aided by US-led airstrikes. Fallujah was the first Iraqi city to fall to the ISIS terror group in January 2014, AP reported.
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