Generated by GPT-5-mini| Selangor | |
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| Name | Selangor |
| Settlement type | State |
| Coordinates | 3°8′N 101°30′E |
| Capital | Shah Alam |
| Largest city | Petaling Jaya |
| Area km2 | 8104 |
| Population | 6,187,000 |
| Population as of | 2020 |
| Governor | Sultan Sharafuddin Idris Shah |
| Chief minister | Amirudin Shari |
Selangor is a highly urbanised and populous state on the west coast of Peninsular Malaysia, forming the core of the Klang Valley conurbation that includes Kuala Lumpur and Putrajaya. It is a key hub for trade and industry connected to Straits of Malacca, Port Klang, and national transport arteries such as the North–South Expressway and the Kuala Lumpur International Airport corridor. The state hosts major corporate headquarters, industrial zones, and cultural institutions that shape national politics and commerce.
The state's name derives from riverine and coastal references cited in early accounts by Antonio Pigafetta, Tomé Pires, and Sang Nila Utama chronicles linking to the Klang River, Selangor River estuaries, and Malay maritime folklore recorded alongside references to the Malacca Sultanate and the Johor Sultanate. Colonial-era documents by the British East India Company, Sir Stamford Raffles, and British colonial administration standardised spellings appearing in maps held by the British Museum and archives of the National Archives of the United Kingdom and the National Archives of Malaysia.
Pre‑modern settlement is evidenced by trade ties with the Srivijaya Empire, Majapahit, and merchants from China and India documented in the Periplus of the Erythraean Sea. The 18th and 19th centuries saw local principalities interact with the Bugis, Aceh Sultanate, and later with the British Empire culminating in treaties similar to those involving Thomas Stamford Raffles and other agents of the East India Company. The state was incorporated into the Federated Malay States alongside Perak, Pahang, and Negeri Sembilan under British Residents such as Frank Swettenham, leading to infrastructural investment tied to tin mining in Kuala Lumpur and port development at Port Klang. Postwar transitions involved the Malayan Union, the Federation of Malaya, and later the formation of Malaysia in 1963, during which the state's administration adapted to federal reforms and episodes of urban expansion influenced by policies under leaders such as Tunku Abdul Rahman and Sultan Hisamuddin Alam Shah.
Located on the west coast of Peninsular Malaysia, the state borders Perak, Pahang, Negeri Sembilan, and encloses the Federal Territory of Kuala Lumpur and Putrajaya in parts, with coastal frontage on the Straits of Malacca. Terrain ranges from coastal plains at Klang and Port Klang to hills of the Titiwangsa Mountains and forested reserves such as Kuala Selangor Nature Park and Bukit Cherakah. The state contains important watersheds for the Klang River and Sungai Selangor, mangrove ecosystems near Kuala Selangor and bird habitats registered with conservation groups like Malaysian Nature Society. Environmental challenges include urban sprawl affecting biodiversity linked to species studied by institutions such as the Universiti Malaya and the Forest Research Institute Malaysia.
The state's constitutional monarchy is headed by the Sultan, a ruler from the Selangor royal family, with executive authority exercised by a Menteri Besar approved under the Federal Constitution of Malaysia and state legislative arrangements modelled after other component states like Johor and Penang. State politics have featured major parties such as Barisan Nasional, Pakatan Harapan, Parti Islam Se-Malaysia, and coalition actors including Malaysian Chinese Association and Malaysian Indian Congress, with electoral contests documented by the Election Commission of Malaysia. Governance issues intersect with federal agencies such as the Ministry of Transport (Malaysia), Ministry of Finance (Malaysia), and regulatory bodies that coordinate urban planning with municipal councils like the Shah Alam City Council and the Petaling Jaya City Council.
As the industrial and commercial heartland of the Klang Valley, the state's economic base includes manufacturing zones around Subang Jaya, Klang District, and Sungai Buloh, financial services clustered near Petaling Jaya and Damansara, and logistics centered on Port Klang and Kuala Lumpur International Airport in the adjacent Sepang District. Key investors include multinational companies with offices akin to those of Sony, Intel, Procter & Gamble, and regional firms similar to Tenaga Nasional Berhad and Petronas subsidiaries. Transport infrastructure integrates the Keretapi Tanah Melayu network, commuter services such as KTM Komuter, mass rapid transit projects like MRT Kajang Line, light rail transit such as LRT Kelana Jaya Line, and expressways including the Federal Highway and New Klang Valley Expressway. Economic policy interacts with national initiatives from the Ministry of International Trade and Industry (Malaysia) and development authorities like the Sime Darby conglomerate in plantation, property, and industrial sectors.
The state's population is ethnically diverse, comprising communities associated with Malay houses, diasporas tied to Chinese clans such as Hokkien and Cantonese traders in Kuala Lumpur suburbs, and Indian communities with roots in Tamils and Telugus concentrated in plantation-era settlements. Religious life includes institutions like the Federal Territory Mosque, temples such as Thean Hou Temple, and churches exemplified by St. James Church, Klang, alongside cultural festivals like Hari Raya Aidilfitri, Chinese New Year, and Deepavali observed across municipal centres. Heritage sites include colonial-era structures at Klang, royal buildings associated with the Istana Alam Shah, and contemporary landmarks such as Shah Alam Stadium and shopping complexes comparable to Pavilion Kuala Lumpur and 1 Utama in the greater conurbation.
Higher education and research institutions include Universiti Putra Malaysia, Universiti Teknologi MARA, Universiti Kebangsaan Malaysia faculties located near state borders, and private institutions with campuses similar to Taylor's University and Monash University Malaysia. Secondary and primary schooling follows frameworks overseen by the Ministry of Education (Malaysia with boarding schools and national secondary schools present in districts like Kuala Selangor and Gombak. Healthcare infrastructure comprises hospitals such as Sultan Abdul Aziz Shah Hospital, specialist centres comparable to National Heart Institute (Institut Jantung Negara), and private providers analogous to Prince Court Medical Centre, integrated into public health initiatives coordinated with the Ministry of Health (Malaysia).