The local area has been inhabited at least since the late
Bronze Age, based on archaeological findings. In 1876, four
barrows from the Bronze Age (roughly 1550–1250 BC) were discovered. In 1981, two typical
Urnfield culture graves from the time about 1000–800 BC were found. In the 1st century AD, the
Roman Empire reached all the way to the
Main. This watery stretch of the
Limes Germanicus was enforced with
castra. To avoid the Romans, the
Germanic peoples moved their settlements to the other side of the Main, the east side, or right bank. After the Roman Empire fell, it took many years for the
Franks to move into the Main region in 531 and found settlements of their own. The first farms in Erlenbach were likely only built sometime between 800 and 950. About 1183, Emperor
Friedrich Barbarossa granted Erlenbach market rights. The
Imperial award was given visible expression with a market and freedom sign. It shows a large cross on whose top stands a cock. On the crossbeam a hand rises up on one side and on the other a sword. The upheld hand made clear that the Erlenbach dwellers stood under the Emperor's special protection, and that any who set himself against it would have to reckon with the sovereign's upraised sword. ==Demographics==