This information on the indigenous people of Sarawak is from The New Straits Times.
Indigenous people form 70 per cent of Sarawak’s population.
The remaining 30 per cent is Chinese.
The Ibans are the largest indigenous community and inhabit Samarahan, Sri Aman, Sarikei, Sibu, Kapit and Bintulu.
They live along major river systems such as the Batang Lupar (Batang = River in Iban), Saribas and Rejang.
They live in traditional longhouses, many of which now have modern facilities.
They are predominantly Christian.
The Melanaus are the second largest community in the state and form 18 per cent of the population.
They are predominantly found in Sarikei, Sibu, Bintulu and Miri.
They are mostly Muslims and 22 per cent of them are Christian.
The Bruneis form about 11 per cent of the population and are concentrated around Kuching and Limbang.
They are all Muslims.
The Bidayuhs form about 8 per cent of the population and are only found in Kuching and Samarahan.
Most of them have abandoned their longhouse lifestyle and now live in Brunei-style village houses.
The Bidayuhs are predominantly Christians.
The Kayan-Kenyah people form 2 per cent of the population.
They live in Marudi and Miri as well as Kapit and are mainly Christians.
The Kelabits, at one per cent, inhabit the Bario Highlands of Lawas and are mainly Christians.
Many of them have become successful professionals.
There is also a small number of Bisaya Kadazans in Lawas. They are predominantly Muslim.
The Muruts, also found in Lawas, are the smallest indigenous community. They are predominantly Christian.
This from the blogger - dialectical divisions of various Borneo indigenous peoples.
IBANS - Serian (Sambas) [Keninjal, Tapin, Banana, Kayung, Delang, Semitau, Suhaid, Suruk, Arut, Dau, Lamandau, Mara, Riam, Pangin, Sekakai, Serawai, Silat, Semitau, Payak, Undau, Tebidah, Seberuang, Kantu, Desa, Ketungau, Balau, Milikin, Mualang, Sebuyau, Bugau], Undup (Batang Lupar), Skrang (Betong), Lemanak (Ulu Ai).
MELANAUS - Bukitan (Barito), Punan Batu [Modang, Segal, Bukat, Hovongan, Aput, Merah, Kereho, Basap, Burusu, Bah Biau, Merap, Tubu], Rejang [Kajaman, Lahanan, Sekapan, Sian, Matu, Daro, Kanowit, Sibu, Seru, Tanjung, Mukah, Balingian, Bruit, Dalat, Igan, Sarikei, Segahan, Preban, Segalang, Siteng], Baram [Belait, Kiput, Narom, Lelak, Berawan, Bintulu].
BRUNEIS - Brunei Proper (Muara), Sarawak [Bruneis = Tamuans].
BIDAYUHS - Jagoi (Singai), Biatah (Kuching), Selako (Iban mixed), Sadong (Serian) [Karangan, Sidin, Meratei, Sau, Sermah, Berang, Sabungo, Santan, Gurgo, Sinan, Sumpo, Budanoh, Sering, Gugu, Matan, Temila, Behe, Ipoh, Manyukai, Beta, Ahe, Bekati, Benyadu, Jongkang, Nyadu, Ribun, Semandang, Sara, Tringgus, Kembayan].
KENYAH - Eastern [Bakung, Bahau, Kayan, Baram, Kelinyau, Mahakam, Usun Apau, Madang, Sebob, Tutoh], Western, Penan.
KAYAN - Busang, Rejang, Mendalam, Murik.
BAJAU - Tausug, Iranun, Mapun, Sibutu.
KADAZANS - Central, Bisaya (Tutong), Lotud, Rungus.
MURUTS - Keningau, Tagal, Selungai, Tidong (Kelabit mixed).
KELABITS - Limbang [Bruang, Libung, Lepu Potong, Long Bangang, Long Napir, Long Seridan, Pa Dalih, Long Leilang, Lengilu, Putoh, Saban, Tring], Lundayeh, Bario (Lawas).
