Tegal Regency is one of the regencies in the northwest part of Central Java province of Indonesia, with an area of 878.79 km². The administrative center used to be in Tegal City, in the northwest corner of the regency, but then Tegal City was administratively separated from the regency and formed into its own territory. The city was later replaced as the administrative center of Tegal Regency by Slawi Town, which is a suburb about 20 km to the south of the city and within the district boundary. The regency had a population of 1,394,839 at the 2010 Census and 1,596,996 at the 2020 Census.