The altitude of the commune of Barbâtre lies between 0 and 19 meters. The area of the commune is 12.47 km2.[3]
Arms
The arms of the commune feature a counterchangedsun without face on a blue and gold field divided horizontally ("per fess") in waves; the French blazon is coupé ondé d'azur et d'or, au soleil non figuré de l'un en l'autre.