Sawahlunto (Jawi: ) is a city in West Sumatra province, Indonesia, and lies 90 kilometres (a 2-hour drive) from Padang, the provincial capital. Sawahlunto is known as the site for the oldest coal mining site in Southeast Asia. Sawahlunto is geographically located in a narrow valley along the Bukit Barisan mountains, and surrounded by several hills, namely Bukit Polan, Bukit Pari, and Bukit Mato. The town has a land area of 273.45 sq. km, and had a population of 56,866 at the 2010 Census and 60,136 at the 2015 Census; the latest official estimate (as at mid 2019) is 62,524.