Of the 21 seismic events that happened in Sarawak from 1874 to 2011, the majority of them occurred between Niah and Selangau regions, which corresponds to Miri and Bintulu Divisions with Modified Mercalli intensity scale (MMI) of 3.5 to 5.3 magnitude.

Ethnically, the population was Iban, Chinese, Malay (mostly Bruneian and Kedayan), Melanau, Kayan, Kenyah, Lun Bawang and Kelabit.

The economy is largely based on petroleum and natural gas extraction from both onshore and offshore wells, and related petroleum refining, liquefied natural gas and chemical production.

Another major industry is timber processing from Miri's huge tropical rainforest.

Agriculture is includes oil palm, rubber, and pepper as the main products.