Sérres is a city in Macedonia, Greece. It is situated in a fertile plain at an elevation of about 70 m, some 24 km northeast of the Strymon river and 69 km north-east of the Macedonian capital, Thessaloniki. The Rhodope Mountains rise to the north and
east of the city. The city is the capital of the peripheral unit of Serres and is situated in the Central Macedonia periphery. Its population was 56,145 in 2001.