Padangsidimpuan is a city in North Sumatra, Indonesia, and the former capital of South Tapanuli Regency, which surrounds the city. It has an area of 159.28 km2 and a population of 178,818 people at the 2000 census, which rose to 191,554 in the 2010 census and 225,105 at the 2020 Census; the official estimate as at mid 2023 was 236,217- comprising 119,228 males and 116,989 females.