Sidoarjo

Sidoarjo is bordered by Surabaya city and Gresik regency to the north, by Pasuruan regency to the south, by Mojokerto regency to the west and by the Madura Strait to the east. It has an area of 634.89 kmē, making it the smallest regency in East Java. As of 2000, Sidoarjo had a population of 1,549,883. The regency is part of the urban planning region surrounding Surabaya, known as 'Gerbangkertosusila'.