Back home in Sibu, Tiong and his family are members of the ruling Sarawak United People's Party (SUPP), a major party of the ruling coalition government in Sarawak. Tiong's younger brother Tiong Thai King has been the Member of Parliament of the Lanang Parliamentary Constituency in Sibu from 1995 to 2013.
Tan Sri Datuk Tiong resides in Sibu, a town in Sarawak, of Borneo island that is part of Malaysia. As of March 2018, with a net worth of about US$1.1 billion, Tiong is ranked by Forbes as the 1,999th richest person in the world.
