The area of Serres - regional unit - is 3,968 square kilometers.
Serres - regional unit - was created in 1915.
The population of Serres - regional unit - is 203,093.
The area of Serres-Gaston is 8,880,000.0 square meters.
The area of Serres-Castet is 13.71 square kilometers.
The area of Serres-Morlaàs is 4,190,000.0000000005 square meters.
The area of Rethymno - regional unit - is 1,496 square kilometers.
The area of Ioannina - regional unit - is 4,990 square kilometers.
The area of Chios - regional unit - is 904 square kilometers.
The area of Corfu - regional unit - is 641.057 square kilometers.
The area of Preveza - regional unit - is 1,036 square kilometers.
The area of Pieria - regional unit - is 1,516 square kilometers.
The area of Euboea - regional unit - is 4,167 square kilometers.