 =Geography=

The previously independent municipality of Orschweier was incorporated into the city of Mahlberg on October 1, 1973 as part of the municipal reform in Baden-Württemberg.This was preceded by - ultimately unsuccessful - negotiations with the neighboring communities of Ettenheim and Kippenheim.Immediate neighboring municipalities are Kippenheim in the north (followed by Lahr), Kappel-Grafenhausen in the west beyond the federal highway 5 and Ettenheim in the southeast (with Altdorf).