Le Caire is a commune in the Alpes-de-Haute-Provence department in southeastern France, about 30 km north of Sisteron. The town's princ…Le Caire is a commune in the Alpes-de-Haute-Provence department in southeastern France, about 30 km north of Sisteron. The town's principal economic activity is aboriculture. Its inhabitants are called Cairois in French.