There were 16,431 Ukrainian refugees in Greece, in which 5,036 are minors, according to the Ministry of Civil Protection.
On April 1, according to police data, 300 Ukrainian refugees entered Greece, of which 78 were minors.
161 entered from Promachonas, 27 from Evzoni and 62 from other land borders. 40 arrived at the "Eleftherios Venizelos" airport, seven at the "Macedonia" airport and three at other airports.
More than four million Ukrainians have now fled the country to escape Russia’s war, United Nations figures showed Wednesday.
UNHCR, the UN refugee agency, said 4,019,287 Ukrainians had fled across the country’s borders since the February 24 invasion, with more than 2.3 million having headed west into Poland.
Among those who fled Ukraine are also Ukrainian nationals with dual citizenship.
An additional 113,000 people moved to the Russian Federation from the Donetsk and Luhansk regions between 21 and 23 February.
The UNHCR wrote: "The escalation of conflict in Ukraine has caused civilian casualties and destruction of civilian infrastructure, forcing people to flee their homes seeking safety, protection and assistance."
"In the first five weeks, more than four million refugees from Ukraine crossed borders into neighbouring countries, and many more have been forced to move inside the country.
"They are in need of protection and support. In light of the emergency and the scale of humanitarian needs of refugees from Ukraine, an inter-agency regional refugee response is being carried out, in support of the efforts of refugee-hosting countries.
"The Regional Refugee Response Plan brings together UN, NGO and other relevant partners and focuses on supporting host country governments to ensure safe access to territory for refugees and third-country nationals fleeing from Ukraine, in line with international standards.
"It also prioritizes the provision of critical protection services and humanitarian assistance, as displacement and needs continue to grow exponentially."