Semarang is a landlocked regency () in Central Java province in Indonesia. It covers an area of 1,019.27 km<sup>2</sup> and had a population of 930,727 at the 2010 census and 1,053,094 at the 2020 census; the official estimate at mid 2023 was 1,089,767, comprising 542,392 males and 547,375 females. These figures exclude the independent cities of Semarang and Salatiga, which are administratively separate from the regency. The regency's capital is Ungaran, which lies immediately to the south of Semarang City.
Administratively, Semarang Regency borders Kendal Regency and Temanggung Regency in the west, Boyolali Regency and Magelang Regency in the south, Grobogan Regency and Demak Regency in the east, and the city of Semarang in the north. Salatiga City, meanwhile, forms an enclave within the regency, from which it is administratively separate. Geographically, it is located between 110ð14â²54,74â³âÂÂ110ð39'3"E and 7ð3'57"âÂÂ7ð30'S. Semarang Regency covers an area of , with a productive land area of .
Air temperature in this regency is relatively cold because it is located between 318 and 1,450 m above sea level. Ungaran Barat District is the lowest area, while Getasan District is the highest. In 2005 there was 97 rainy days and in 2007 was 83 rainy days. Bawen District is an area with the most rainy days (144 days) and Suruh District the least (30 days).
Semarang Regency had a population of 1,089,767 in mid 2024, an increase of 36,673 (or 3.5%) since the 2020 census. The gender ratio in mid 2024 was 99.09 (males per 100 females).
The regency is governed by an elected regent and a municipal legislature (DPRD), both serving five-year terms. As of 2025, the regent is Ngesti Nugraha from the Indonesian Democratic Party of Struggle (PDI-P), who had served since February 2021. PDI-P is also the largest party in the municipal DPRD, with 18 out of 50 members in the 2024âÂÂ2029 term.
Semarang Regency comprises nineteen districts (kecamatan), listed below with their areas and their populations at the 2010 Census and the 2020 Census, together with the official estimates as at mid 2024. The table also includes the locations of the district administrative centres, the number of villages in each district (totalling 208 rural villages or desa, and 27 urban villages or kelurahan), and its post codes.
Notes: (a) Kaliwungu is the most southerly district in this regency, and is surrounded to the west, south and east by Boyolali Regency. <br>(b) including one kelurahan (Gondoriyo). (c) comprising eight kelurahan (Baran, Kranggan, Kupang, Lodoyong, Ngampin, Panjang, Pojoksari and Tambakboyo) and two desa. <br>(d) including one kelurahan (the district administrative centre). (e) including two kelurahan (Bawen and Harjosari). <br>(f) comprising four kelurahan (Bergas Lor, Karangjati, Ngempon and Wujil) and nine desa. (g) comprising five kelurahan (Bandarjo, Candirejo, Genuk, Langensari and Ungaran) and six desa. <br>(h) the desa of Nyatnyono and Gogik share the postcode of 50552. (i) comprising five kelurahan (Beji, Gedanganak, Kalirejo, Sidomulyo and Susukan) and five desa.
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