It is located in the west of the island. It covers an area of 1.1 square kilometres (0.42 sq mi) and has a population of 1,300. It is sometimes called the unofficial capital city of Nauru, even though Nauru does not have an official capital city, and it is more common for Yaren to be cited as such.
The majority of Nauruan industry is located in Aiwo. Among the facilities in Aiwo are: