Rosera is a town (Subdivision) on the bank of River Budhi Gandak. It is a municipality in Samastipur district in the Indian state of Bihar.Rosera Is Popular Among all Subdivisions Of Samastipur District.Rosera block consist 48 Villages like Hasanpur, Bibhutipur, Singhiya, Mabbi, Nayanagar, Bithan, Bhirha, Mahthi etc. Rosera is well connected by the rest of the country through railway or road network.Rosera Is Connected To Begusarai District Via SH-55 and Darbhanga District Via SH-88.
Rosera is the one of the oldest City Of India.
There is a myth about the city is that Rosera was the first Nagar Parishad of Bihar and Patna was Second.
Source : Wikipedia