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.