It is named after its capital Simanggang (formerly known as Sri Aman from 1974 to 2019, which means town of peace in Malay).

Agriculture, livestock, technical & vocational education, public service sector, and commercial business is the main economic activities in Sri Aman.

According to 2020 census, Iban is the only majority ethnic in Sri Aman, along with Chinese and Malay.

Total population of every areas in Sri Aman, Sarawak.

Iban is the majority ethnic that permanently lived in Simanggang and Pantu.