The city was founded in 1922, by a group of new immigrants, mostly from eastern Europe, who originally came to Jafa and decided to seek for a piece of land in an "open space" as they described it, out of the crowded and narrow streets of the ancient city. They also decided that the new settlement will be an agricultural one.
After an exploration envoy which have looked all over the region north of Tel Aviv, the envoy members recommended to settle in the an area which was "flat, without any hills nor valleys and suitable for seeding and plantations and the air is good". This area is what had become "Ir Shalom" ("the city of piece") the first name chosen for the new settlement. The price they paid was 5 Egyptian pounds for 500 Acers.
By 1928 the young and small settlement was totally based on agriculture, especially oranges, field plantations and chickens and by that time the small community decided to call for an open competition to suggest a new name for the village. In November that year the name Ramat Hasharon") the height of the Sharon") was chosen, to indicate the character of the location ("Sharon" is the region alongside the Mediterranean, in the central part of Israel).
In 1929 the whole place was evacuated due to the riots caused by the "Abu Kishek" gang, a local Arab tribe which controlled the main roads to Ramat-Hasharon and threatened to raid the village. The unrest and fear remained until the establishment of the state of Israel in 1948, and in between the village survived the murderous times of the Arab riots in 1936-1937 and participated in the long battle in years 1945-1948 for the independence of Israel
Nowadays Ramat-Hasharon is no longer an agricultural village. In the year 2001 it was officially declared a "city". However the original "flavor" of a green place is kept. Not far away from the big city (10 miles from Tel Aviv), Ramat-Hasharon runs a quiet life with a high standard of living, based on a high quality educational system, which includes 2 high schools (of the finest in the country), specialized in arts and technology, high institution for music (especially jazz music) and lots of sports clubs, amongst then the women basketball club, which attracts top basketball players from the WNBA and last season titled 3rd in European Cup.
During the years Ramat-Hasharon developed warm "SisterCity" relations with two cities, Georgsemarienhutte in Germany and Dunkerque in France. On March 17th, 2006, Mayor Yitzhak Rochberger signed another sister city agreement with Tallahassee, the capital city of the state of Florida.
Another sister-cities agreement has been signed on July 8th 2009 with the French city Saint-Maur-des-Fossés, a city of approximately 80,000 inhabitants (of which 8,000 members of a very active Jewish community), located 15 miles southern of Paris. The city socio-demographic characteristics are very similar to those of Ramat-Hasharon. The signing ceremony was held in Ramat-Hasharon in the presence of the French ambassador, Jean-Michel Kaza, Saint-Maur mayor, Henri Plagnol and dozens of former citizens of Saint-Maur who live now in Israel. A year later the agreement was re-signed in Saint-Maur.
Mayor Yitzhak Rochberger was elected in 2003 and during his term in office the city marked some significant milestones like the shutdown of a huge fuel and gas farm which has been a menace to the city for decades and the linking in a record short time the local water system, which has been based on the local wells, to the national system.