Ramat HaSharon, originally Ir Shalom, was a moshava established in 1923 by olim from Poland. It was built on 2,000 dunams (2 square kilometres (0.77 sq mi)) of land purchased for 5 Egyptian pounds per dunam. In the 1931 census, the village had a population of 312.
In 1932, the community was renamed Kfar Ramat HaSharon (Heights of Sharon Village). By 1950, the population was up to 900. Rapid population growth in the 1960s and 70s led to construction of many new roadways, schools and parks. Several distinct neighbourhood evolved in the 1970s, including Morasha on the southern edge, one with many military and air force personnel in the eastern edge, and many successful professionals moved into the developing city. Ramat HaSharon became a highly desirable place to live in the 1980s as a very safe place, containing many gardens and wide boulevards, and attracting many upper middle class suburban families.