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  Brunei-Muara

  Capital City: Bandar Seri Begawan

  Area Sq Km: 571

  Population: 289,630

• 

  Belait

  Capital City: Kuala Belait

  Area Sq Km: 2,727

  Population: 69,062

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  Tutong

  Capital City: Pekan Tutong

  Area Sq Km: 1,166

  Population: 48,313

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  Temburong

  Capital City: Pekan Bangar

  Area Sq Km: 1,306

  Population: 10,251