Aouste is located some 35 km south-east of
Hirson and 40 km west by north-west of
Charleville-Mézières. Access is by the D36 road from
La Férée in the south passing through the village then continuing east to
Prez. The D27 road also comes from
Rumigny in the west passing through the commune south of the village and continuing to
Marlemont in the south-east. A railway from Hirson to Charleville-Mezieres passes through the commune with a station at
Liart just outside the commune to the south-east. Apart from the village the commune is mostly farmland with a few patches of forest. The
Aube river passes through the commune from the east and flows through the village before continuing west to join the
Ton at
Hannappes. The ''Ruisseau de Laval d'Estrebay
flows from the north forming part of the northern border to join the Aube
on the western border. There is also the Ruisseau du Moulin Veron
which flows from the south joining the Aube near the village. The Ruisseau de Gandlu
flows from the south-east joining the Aube'' in the village.
Neighbouring communes and villages Heraldry ==Administration==