Sonbarsa Raj in Saharsa district, Bihar, India is a main settlement on National Highway 107, extending from Maheshkhunt to Purnia.Sonbarsa is a Town in Sonbarsa Tehsil, Saharsa District, Bihar State . Sonbarsa is located 24.1 km distance from its District Main City Saharsa . It is located 160 km distance from its State Main City Patna .Other villages in Sonbarsa Tehsil are Baith Mushahri, Baraith, Barsam, Kopa, Mahua North, Mangwar, ... . .Sonbarsa Pin Code is 852129 and Post office name is .