Kosi division is an administrative geographical unit of Bihar state of India.

Every year tonnes of corn and makhana are disseminated throughout the entire country by railways and airways.

The following crops are grown in the region: Makhana (Euryale ferox Salisb), rice, mangoes, litchi, bamboo, mustard, corn, wheat and sugarcane.

Sagwan or teak (Tectona grandis) trees are now grown on a large scale.

[2] During the late Vedic period (c. 1100–500 BCE), Kingdom of the Videhas became one of the major political and cultural centers of South Asia, along with Kuru and Pañcāla.