text: Beyond the town centre, peripheral areas like Sibu Jaya and the district of Selangau fall under the administration of the Sibu Rural District Council (SRDC), which manages a vast territory covering 6,000 km2. Both SMC and SRDC are headquartered within Wisma Sanyan.
  Furthermore, Sibu's administrative landscape expanded with the inauguration of the Sibu Islamic Complex in September 2014. This complex serves as the home to various governmental bodies, including the Sibu Resident Office, Sibu District Office, State Treasury Office, Social Welfare Department, and the State Islamic Religious Department (JAIS).
  International relations
  As of 2015, Sibu is twinned to fifteen places in China:
  Geography
  Sibu is located near the Rajang delta at the confluence of Rajang and Igan rivers. Peat swamp forests and alluvial plains are particularly prevalent in the Sibu Division. Sibu is located on a deep peat soil, which has caused problems in infrastructure development because buildings and roads slowly sink into the ground after its completion. The location of Sibu in lowland peat swamps have subjected it to frequent floods, about 1 to 3 times per year. Because of these factors, the Sibu Flood Mitigation project was started to relieve the area from the floods. The highest elevation in Sibu is at Bukit Aup Jubilee Park, measuring 59 m above sea level.