Sidoarjo Regency () is a regency in East Java, Indonesia. It is bordered by Surabaya city and Gresik Regency to the north, by Pasuruan Regency to the south, by Mojokerto Regency to the west and by the Madura Strait to the east. It has an area of 719.34 km2, making it the smallest regency in East Java.
As at the 2010 census, Sidoarjo Regency had a population of 2,191,489 while the 2020 census showed a small decline to 2,033,760, notably in the northern part of the regency immediately bordering Surabaya; the official estimate as at mid 2022 showed a further decline to 1,955,002 (comprising 979,567 males and 975,435 females). The regency is part of the urban region surrounding Surabaya, known as 'Gerbangkertosusila' area.
Administrative districts
The Sidoarjo Regency is divided into eighteen administrative districts (kecamatan). The districts are tabulated below with their areas and their populations at the 2010 census and the 2020 census, together with the official estimates as at mid 2022. The table also includes the locations of the district administrative centres, the number of administrative villages in each district (totaling 322 rural desa and 31 urban kelurahan), and its post code.
Notes: (a) including 6 kelurahan. (b) including 14 kelurahan. (c) including 8 kelurahan. (d) including 3 kelurahan.
Economy
As a satellite region and part of Greater Surabaya, Sidoarjo economy is valued at 197.24 Trillion IDR in 2020 and is the second-largest in East Java after Surabaya.
Primary Sector
Although Sidoarjo Regency's land area is relatively small and densely populated, the primary sector still maintains a role in Sidoarjo's economy. Agriculture is mainly produced in western and south-western part of Sidoarjo mainly Tulangan District, Krembung District, and Balongbendo District. During colonial era, Sidoarjo was famous for sugarcane production and it was hosted several sugar mills owned by Colonial government. After Independence, Indonesia government nationalised all of sugar mills in Sidoarjo. Sugarcane production sector peaked in 70s and gradually declining since then, due to inflows of manufacturing investment and rapid urbanization that reduced sugarcane planting area. Today, agricultural crops that still produced in Sidoarjo are Rice, Banana, Papaya, Cassava, and several lowland vegetables.
Fisheries also still maintain a role. In the past, Sidoarjo was known as a fishing town, but the fishing sector was slowly declining as Sidoarjo became more urbanized. Today, fishing has been replaced by aquaculture as the main source of fish in Sidoarjo. Highly productive aquaculture is mainly produced in the eastern part of Sidoarjo Regency, and the main product is Milkfish and farmed shrimp which are mostly exported to the US and Japan. Sidoarjo is also famous for its processed fishery products, such as prawn cracker, fish cracker, shrimp paste and petis.
Mining sector could be neglected as it contributes very small to Sidoarjo economy. The main mining sector is natural gas, which is produced in Porong District. There are also several sand miners that operate in Jabon District.
Secondary Sector
Manufacturing is a main sector of Sidoarjo economy with contribution nearly 40%. Sidoarjo manufacturing production is diversified and range from furniture to electronics products. There are numerous manufacturing plants in Sidoarjo. Among this are : Jatim Taman Steel (Steel Manufacturer), Avian (Paints and building material), Tunggal Djaja (Paints Production), Maspion (Household durable goods), Japfa Comfeed (Feedmills and poultry), Interbat (Pharmaceuticals), Integra (Furniture), Tjiwi Kimia (Paper), Kimberly-Clark's Softex (Non-durable consumer goods), Unicharm (Non-durable consumer goods), Polygon Bikes (Bikes), Alumindo (Aluminium products), Sekar Group (Food processing), Hisamitsu (Pharmaceutical), Lighting Solutions (Lamp), ECCO (Footwear), Samator (Industrial gas and chemicals), Bernofarm (Pharmaceutical), Muntjul Diamond (Vehicle body), Charoen Pokphand (Agribusiness) and many more.
There are thousands small and medium manufacturers established in Sidoarjo. Garments, Food Processing, Footwear, Apparel, and Furniture are products that usually produced by small and medium manufacturers in Sidoarjo. There are also many small and medium manufacturers that produces Traditional Herbs, Machinery, Packaging, and Metal products.
During colonial era, there are ten sugarmills in Sidoarjo and the oldest is Watu Tulis Sugarmills that built in 1838. Today, there are remain three sugarmills that still operated in Sidoarjo. Among this are New Candi Sugarmills that built in 1911, Krembung Sugarmills, and Watu Tulis Sugarmills.