Jennifer Pagonis, a spokeswoman for the UN High Commissioner for Refugees, said 60,000 people a month were being uprooted, up from 50,000 a month.
She said Iraqis were finding it harder to get access to social services, and that many were choosing to leave ethnically mixed areas before they were forced to do so.
More than 2 million Iraqis are displaced within the country.
RFE/RL Iraq Report
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