 In the 1922 census of Palestine, conducted by the British Mandate authorities, Yamun had a population of 1,485; all Muslims except one Christian who was Orthodox.The population increased in the 1931 census to 1,836; all Muslim, in a total of 371 houses.In the 1945 statistics the population was 2,520; all Muslims, with 20,361 dunams of land, according to an official land and population survey.