Template: Infobox Island / Maintenance / height missing
The island is located approximately 900 km north-east of Papua New Guinea's capital Port Moresby and 255 km north- west of the provincial capital of Manus. Located only a few meters above sea island is about 7 km ². At the 2000 census Aua had 419 inhabitants.
On Ouch there is a flight field with the IATA code AUI.
The island is traditionally divided into three districts, which presided until 1904 chiefs ( puala ). At the time the population of Aua was estimated at 2000. The villages and hamlets, which niederrangigere chiefs ( päavi ) presided, are or were all on the coast:
This settlement names no longer appear in the current census geography.
- Bagara for Vow
- Bagara on Mei
- Piago ( Station)
Bāarafu was once the most populous district, but is today uninhabited. Today Laroaro is the most populous district. The puala of Laroaro resided in the village Pirgur.