Mukim Labi is a mukim in the interior of Belait District, Brunei. It has an area of 361.8 square kilometres ; the population was 1,216 in 2016. …Mukim Labi is a mukim in the interior of Belait District, Brunei. It has an area of 361.8 square kilometres ; the population was 1,216 in 2016. The mukim is located in the central and south-western part of the district, bordering Mukim Liang to the north, Mukim Bukit Sawat to the north-east, Mukim Sukang to the east, the Malaysian state of Sarawak to the south and west and Mukim Kuala Balai and Mukim Seria to the north-west. It is regarded as part of Ulu Belait. The mukim is named after Kampong Labi, one of the villages it encompasses.There are also many local fruit orchards such as durian in these two areas which can be an addition to their sources of sustenance in addition to gardening and farming.