The town's first documentary mentions come from the years 750 to 779, under the name Zegemunde. The second documentary mention came in 1223. In 1253, Gemünden is first mentioned as a town. At this time, Gemünden belonged to the Counts of Ziegenhain. This historical fact is even seen in the town's coat of arms, showing a black bird in a white field with red claws, a goat's head (Ziege is German for goat) and a six-pointed star under each wing.
