Mariani has a cosmopolitan culture with many communities speaking different languages and living in harmony for decades.

The town was once well known for having one of the largest plywood factories in India, however, they were later closed down as felling trees was banned by law.

It is served by Mariani junction, one of the major railhead of Tinsukia railway division.

[5]BJP's Rupjyoti Kurmi is the incumbent MLA of Mariani (Vidhan Sabha constituency).

In 2022 Assam municipal elections, the Independent Candidates with Mariani Unnayan Mancha won seven wards out of ten wards, reducing BJP to two in Mariani Municipal Corporation.