|Area1||8.68 km2 (3.35 sq mi)|
|• Density||12/km2 (32/sq mi)|
|INSEE/Postal code||89128 / 89440|
|Elevation||214–332 m (702–1,089 ft)|
1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km² (0.386 sq mi or 247 acres) and river estuaries.2 Population without double counting: residents of multiple communes (e.g., students and military personnel) only counted once.
The oldest known form of its name is Curtis Arnulfi, "the enclosure belonging to a (Frankish or other German) man named Arnwulf" who invaded Gaul in the 4th to 6th centuries.
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