Banka is a city and a municipality serving as district headquarters.

The city is historically very important because of Mandar Hill where Samudra Manthan has been occurred by Hindu rituals.

It is a part of Anga region of Bihar.

As of 2001[update] India census,[4] Banka had a population of 35,416, with 54% males and 46% females.

The average literacy rate was 55%, lower than the national average of 59.5%, with 61% of the males and 39% of females literate; 16% of the population was under 6 years of age.