South Labuhanbatu Regency is a regency of North Sumatra, Indonesia, created on 24 June 2008 by being carved out of the southern districts of the existing Labuhanbatu Regency The new South Labuhanbatu Regency covers an area of 3,596 square kilometres and according to the 2010 census it had a population of 277,673, which rose to 314,094 at the 2020 Census; the official estimate as at mid 2022 was 320,324. Wikipedia