The number of Syrians who have fled their war-ravaged country has now topped the 1 million mark.
That figure is based on reports from United Nations field offices in neighboring countries that are giving shelter to those who have escaped.
Meanwhile, thousands continue to cross the border every day.
The United Nations also estimates more than 70,000 people have been killed in Syria's uprising against President Bashar al-Assad.
U.N. High Commissioner for Refugees Antonio Guterres issued a statement on the crisis and the latest milestone.
"With a million people in flight, millions more displaced internally, and thousands of people continuing to cross the border every day, Syria is spiraling towards full-scale disaster," Guterres said.