The Greek census (1920) recorded 1921 people in the village and in 1923 there were 650 inhabitants (or 75 families) who were Muslim.[3] Following the Greek–Turkish population exchange, in 1926 within the village there were refugee families from East Thrace (5), Asia Minor (67) and Pontus (15).[3] The Greek census (1928) recorded 1468 village inhabitants.[3] There were 88 refugee families (358 people) in 1928.[3]
In 1945, Greek Foreign Minister Ioannis Politis ordered the compilation of demographic data regarding the Prefecture of Kastoria.[4] The village Korisos had a total of 1552 inhabitants, and was populated by 775 Slavophones without a Bulgarian national consciousness.[5]