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| Selangor (state) | |
|---|---|
| Name | Selangor |
| Settlement type | State |
| Coordinates | 3.0738° N, 101.5183° E |
| Subdivision type | Country |
| Subdivision name | Malaysia |
| Seat type | Capital |
| Seat | Shah Alam |
| Largest city | Petaling Jaya |
| Area total km2 | 8104 |
| Population total | 7 million (approx.) |
| Population as of | 2020 |
| Timezone | MST (UTC+8) |
Selangor (state) is a coastal and hinterland state on the west coast of the Malay Peninsula in Peninsular Malaysia. Selangor surrounds the federal territories of Kuala Lumpur and Putrajaya and contains a mix of urban agglomerations such as Petaling Jaya and Shah Alam, industrial hubs such as Port Klang, and rural districts including Hulu Selangor and Sabak Bernam. Selangor is Malaysia's most populous and economically productive state, hosting major infrastructure such as Kuala Lumpur International Airport and port facilities that link to global trade networks including Straits of Malacca routes.
Selangor's precolonial era saw Malay polities and riverine trade centered on the Klang River with archaeological links to regional networks like the Srivijaya sphere and contacts with Austronesian peoples. The 18th century brought the foundation of the modern Malay polity under the Kuala Selangor sultanate and figures such as Raja Abdullah and the Tiong Nam traders; later 19th-century developments included the arrival of British interests tied to the Pahang tin trade and the signing of treaties like the Pangkor Treaty that reshaped Malay-British relations. Selangor became a key site during the British Malaya period, with industrial growth around tin mining in Kuala Lumpur and rubber plantations linked to companies such as Sime Darby. The Japanese occupation during World War II affected Selangor's urban centers, followed by postwar political changes culminating in the formation of the Federation of Malaya and later Malaysia in 1963. Political events in Selangor have included episodes involving state royal succession, federal-state relations with Kuala Lumpur and Putrajaya, and electoral contests featuring parties such as the United Malays National Organisation and the People's Justice Party.
Selangor occupies lowland plains along the Straits of Malacca and upland areas in the Titiwangsa Mountains fringe, with major river systems including the Gombak River and Langat River. Coastal districts like Kuala Selangor and Sabak Bernam feature mangrove ecosystems linked to the Straits of Malacca biodiversity corridor, while interior highlands near Hulu Selangor and Kuala Kubu Bharu support montane forests adjacent to protected areas such as the Kuala Selangor Nature Park. The state experiences a tropical rainforest climate under Köppen climate classification, with monsoon-influenced rainfall related to the Northeast Monsoon and Southwest Monsoon, producing seasonal flood risks in low-lying zones like Klang and Petaling Jaya.
Selangor's constitutional framework features a hereditary monarch, the Sultan of Selangor, and an elected state legislative assembly, with executive functions exercised by the Menteri Besar drawn from parties represented in the assembly. State administration interfaces with federal institutions such as the Federal Territory of Kuala Lumpur authorities and federal ministries based in Putrajaya; interjurisdictional coordination addresses issues spanning urban planning in Petaling District and infrastructure at Kuala Lumpur International Airport. Political contestation has involved coalitions including the Barisan Nasional and Pakatan Harapan partners such as the People's Justice Party and Democratic Action Party, affecting policy on land development, public transport projects like the Mass Rapid Transit (MRT) and legal frameworks including state enactments administered by the Selangor State Assembly.
Selangor is Malaysia's economic engine, with sectors across manufacturing clusters in Shah Alam and Banting, port activity at Port Klang, and aviation and logistics centered on Kuala Lumpur International Airport and Subang Airport. The state's economy integrates multinational corporations such as Sime Darby, Petronas downstream facilities in the Klang Valley, and semiconductor and electronics firms in industrial parks near Rawang and Klang. Agricultural zones in Hulu Langat and Sabak Bernam produce oil palm and rice linked to firms like Felda and regional agro-food supply chains, while tourism assets generate revenue from destinations such as Sunway Lagoon and heritage sites in Kuala Selangor. Financial services cluster in the greater Kuala Lumpur urban area, with banks headquartered in nearby towers and stock-market linkages through Bursa Malaysia listings.
Selangor's population is ethnically diverse, comprising major communities including Malays, Chinese, Indians, and indigenous Orang Asli groups in interior areas like Sungai Buloh. Religious institutions in the state include Istana Alam Shah, mosques such as the Sultan Salahuddin Abdul Aziz Shah Mosque, temples in Petaling Jaya and Klang, and churches serving diverse congregations. Urban migration driven by employment in manufacturing, services, and education has expanded conurbations like Petaling Jaya and Puchong, while rural districts retain lower-density populations with livelihoods tied to fisheries in Sabak Bernam and plantation labour in Banting.
Selangor hosts major transport nodes: Kuala Lumpur International Airport in Sepang District, Port Klang (a primary container and transshipment hub), and the KTM Komuter and KTM ETS rail services linking to the national rail network. Urban transit projects such as the Klang Valley MRT, the LRT Kelana Jaya Line, and the Kuala Lumpur Monorail serve dense corridors between Subang Jaya, Petaling Jaya, and Kuala Lumpur. Road arteries include the Federal Highway, the New Klang Valley Expressway, and the North–South Expressway Central Link, providing freight and commuter flows that connect industrial parks in Shah Alam and Banting with ports and airports. Utilities infrastructure involves water supply schemes managed by entities like Air Selangor and energy distribution coordinated with Tenaga Nasional Berhad networks.
Selangor's cultural landscape blends Malay palace traditions at the Istana Raja Muda, Chinese heritage in Klang with sites like Kwai Chai Hong and Indian cultural festivals centered around Batu Caves, while contemporary attractions include theme parks such as Sunway Lagoon and shopping complexes in Petaling Jaya and Subang Jaya. Heritage conservation initiatives involve colonial-era buildings in Kuala Selangor and industrial archaeology at former tin-mining sites linked to the history of Kuala Lumpur. Festivals such as Hari Raya Aidilfitri, Chinese New Year, and Deepavali draw visitors, and nature-based tourism leverages destinations like the Kuala Selangor Nature Park and highland retreats near Bukit Tinggi.