On 18 August 2008, the Kosi river picked up an old channel it had abandoned over 100 years previously near the border with Nepal and India.

Jayaprakash Narayan took refuge in the town after breaking away from Hanuman Nagar Jail (Nepal) during the freedom struggle.

Buses run from Nirmali to other cities in Bihar including Patna, Darbhanga, Bhagalpur, Muzaffarpur, Purnea, Katihar, Forbesganj, Saharsa, and Supaul.

Inter State bus routes serve Delhi, Lucknow, Kanpur, Noida, Gurgaon, Ranchi, Siliguri, and Kolkata.

Hari Prasad Sah, the MLA from the Laukaha constituency, was the Panchayati Raj minister in the Government of Bihar.