Tuban is a town located on the north coast of Java, in Tuban Regency (of which the town is the administrative capital), approximately 100 km (62 mi) west of Surabaya, the capital of East Java. Tuban Regency is surrounded by Lamongan Regency in the east, Bojonegoro Regency in the south and Rembang Regency, Central Java in the west. Tuban town covers 21.29 km2 (8.22 sq mi) and in mid 2019 had an officially estimated population of 91,980. The Dutch name of the city is 'Toeban'.