Allmersbach im Tal was first mentioned in 1291, relating to the gifting of goods from the Countess Richinza von Löwenstein to the Teutonic Order of Winnenden.

[2] The municipality (Gemeinde) of Allmersbach lies at the center of the Rems-Murr district of Baden-Württemberg, one of the 16 States of the Federal Republic of Germany.

[2] Allmersbach's coat of arms displays a crossbow, in red and with its trigger guard facing right, upon a field of silver.

The crossbow is a motif that has been associated with Allmersbach since 1686, though it is not known why, and the tincture is taken from the arms of the County of Löwenstein [de], which had property in the town.

The coat of arms was approved for official use and a corresponding municipal flag issued by the Federal Ministry of the Interior on 16 September 1965.