Beilstein is the result of three neighbouring villages growing together, Beilstein, Haiern and Wallendorf, the last of which had its first documentary mention in 774. Beilstein was granted town rights on 18 February 1321.
Beilstein's formation is a result of the merging of three villages: Beilstein, Haiern, and Wallendorf.  Wallendorf was first documented in 774, and Beilstein received its town rights on February 18, 1321.