Bad Salzuflen is bordered to the east by the town of Lemgo, to the south by Lage and on the southwest by Leopoldshöhe.
The city is divided into twelve districts Bad Salzuflen, Biemsen-Ahmsen, Ehrsen-Breden, Grastrup-Hölsen (with Hölserheide), Holzhausen (with Sylbach), Lockhausen, Papenhausen (with Volkhausen) Retzen, Schotmar, Werl-Aspe (with Knetterheide), Wülfer-Bexten and the largest area in the district of Wüsten (with Frettholz, Glimke, Heller Hausen, Hollenstein, Pehlen, pill break, Voßhagen and Waldemeine).