Westhalten means "the western slopes of Stragenberg" ( "West" = west and "Halden" = hills) over Rouffach. The village was part of Mundat bishops of Strasbourg, bailiwick of Rouffach, and formed a mixed community dependent Rouffach city and commune Soultzmatt. There was no court in the village and court cases were settled by the magistrate of the common parent. That is why Westhalten had neither seal nor coat of arms before 1792.
In 1788, residents formed their own assembly and declared autonomous municipality under the revolutionary laws. Rouffach Soultzmatt continued and yet their contribution to communal expenses. It was not until 1818 that Westhalten got its own municipal ban. The town built its prosperity in the 19th and 20th century, thanks to the wine.
