Evros - regional unit - was created in 1920.

Evros - regional unit -'s population is 150,580.

According to Ploutarchos, the initial name of the river was Romvos. Today the river is called Evros. Evros was the son of the Thracian king named Kassandros this is from where the river has its name. Evros was slandered from his stepmother, Damasipi, because he refused her love. After that Evros was chased from his father because he believed Damasipi, Evros was so disappointed and jumped into the river, since then the river is carrying his name.

The area of Evros - regional unit - is 4,242 square kilometers.

Aliakmon, Acheloos, Pinios and Evros