from the Hellenistic, Roman and Byzantine eras have been found at Jammala. It has been suggested that this was Gemmail, mentioned in Frankish sources, but archeological evidence does not support this.
Jammala was incorporated into the Ottoman Empire in 1517 with all of Palestine, and in 1596 it appeared in the tax registers as being in the nahiya of Al-Quds in the liwa of Al-Quds. It had a population of 22 household; who were all Muslims. They paid a fixed tax-rate of 33,3 % on agricultural products, including wheat, barley, olive trees, fruit trees, goats and beehives, in addition to occasional revenues; a total of 11,000 akçe. Potsherd from the early Ottoman era have also been found here. In 1838 Jemmala was noted as Muslim village in the Beni Harith district, north of Jerusalem. In May, 1870, Victor Guérin found the village, which he called Djemmala, to have 350 inhabitants. He further noted that some houses were constructed of stones, which by their size and regularity "spoke of ancient times". An Ottoman village list from about the same year, 1870, found that the village, called Dschemali, had a population of 246, in a total of 36 houses, though the population count included men, only. In 1882, the PEF's Survey of Western Palestine described Jemmala as: "a very small village, with a little mosque on high ground." In 1896 the population of Dschemali was estimated to be about 312 persons.
In the 1922 census of Palestine conducted by the British Mandate authorities, Jammala had a population of 119 Muslims, increasing in the 1931 census to 164 Muslims, in 53 houses. In the 1945 statistics the population of Jammala was 200 Muslims, while the total land area was 7,170 dunams, according to an official land and population survey. Of this, 1,946 were plantations and irrigable land, 1,032 for cereals, while 19 dunams were classified as built-up areas.
Since the Six-Day War in 1967, Jammala has been under Israeli occupation. The population in the 1967 census conducted by the Israeli authorities was 268, of whom 15 originated from the Israeli territory. After the 1995 accords, 41.2% of Al-Ittihad land is defined as Area B land, while the remaining 58.8% is defined as Area C. Israel has confiscated 858 dunams of land from Al-Ittihad for the construction of 4 Israeli settlements: Nahl'iel, Na'aleh, Talmon and Hallamish.