Brunei occupies 5,770 sq km (2,228 sq mi) on the northwestern coast of the island of Borneo. Comparatively, the area occupied by Brunei is slightly smaller than the state of Delaware. It comprises two small enclaves separated by the Limbang River Valley, a salient of the Malaysian State of Sarawak, which surrounds Brunei on the E , S , and W . Brunei's total boundary length is 381 km (237 mi).
Brunei's capital city, Bandar Seri Begawan, is located in the northern part of the country.