Kfar Saba, officially Kfar Sava, is a city in the Sharon region, of the Central District of Israel. In 2019 it had a population of 110,456, making it th…Kfar Saba, officially Kfar Sava, is a city in the Sharon region, of the Central District of Israel. In 2019 it had a population of 110,456, making it the 16th-largest city in Israel. The population of Kfar Saba is nearly entirely Jewish.