The population figures for the municipality of Agios Vasilios based on the last census of 2021 are as follows:
A total of 7,018 people (7,427 in 2011) live in the municipality as a whole. There are 409 fewer registered residents compared to 2011 (= 5.51%).
Unfortunately, I have not yet been able to find any more differentiated results down to local community/settlement level, as could be found for 2011.
Census results see among others here.