Tanjungbalai, also colloquially written as Tanjung Balai, is a city in North Sumatra province, Indonesia, on the estuary of the Asahan River. It has an area of 60.52 square kilometers and the sixth largest kota population in North Sumatra with 154,445 inhabitants in the 2010 census and 176,027 at the 2020 Census; the official estimate as at mid 2023 was 183,170- comprising 92,715 males and 90,455 females.