UNHCR said the number of Syrians leaving their country has increased dramatically since the beginning of the year with more than 400,000 - nearly half the total figure - moving since January 1st.
Most have fled to Lebanon, Jordan, Turkey, Iraq and Egypt and some arrive in North Africa and Europe.
- 330,000 Syrian refugees in Lebanon
- 320,000 in Jordan
- 185,000 in Turkey
- 105,000 in Iraq
- 43,500 in Egypt
Lebanon - the country closest to Syria's embattled capital of Damascus - is the smallest of the country's neighbours but has received the most refugees.
Including Syrian workers and self-supporting Syrian families, one in five people in Lebanon are now Syrian.
More top news
Controversial columnist Katie Hopkins has described her fear that she may die during brain surgery to cure her epilepsy.
A funeral is to be held outside in the US state of Georgia for Bobbi Kristina Brown, daughter of the late Whitney Houston and Bobbi Brown.
Experts have warned that Ash dieback's impact on millions of trees could have serious consequences for the landscape and wildlife.