Communities of Communes of the Bas-Rhin département
The département of Bas-Rhin includes 1 urban community and 46 Communities of Communes gathering 517 communes over the 526 of the département. The commune of Siltzheim is part of the agglomeration community Sarreguemines Confluences which is in the département of Moselle.
Source: Wikipedia — Communities of Communes of the Bas-Rhin département (CC BY-SA 4.0)