|Elevation||61 m (200 ft)|
Dumraon is one of Bihar's oldest municipalities and one of India's oldest princely states. It is located 1.5 km south of National Highway (NH) 84 (Ara-Buxar Highway), 20 kilometres (12 mi) north from NH-30 (Patna-Ara-Mohania) and 80 kilometres (50 mi) from NH-2 (Delhi- Kolkata). It is known for its Sinhora. Sights include Jangali Shiv ka Mandir, Bihariji Ka Mandir, Dumrejani mai ka Mandir and Kaliji Ka Mandir. The famous villages near by Dumraon are Baisegaon (Fafadar), Kopp wan, Nandan, Chaugain, amsari,Simari, Ariaon & Sowan.
Horilshah founded this town, and so it was earlier known as Horilnagar. Horilshah was a descendant of "Raja Bhoj Of Dhar" and came from Ujjain. As a princely state its boundaries were the rivers Ganges & Son and included part of Uttar Pradesh.
It is known for the case of the heir of Maharani Beni Kuwari. In early 1900s the case was fought in the Privy council. Mahrani Beni Kuawari was the widow of the then Maharaja of Dumraon. She built the famous Banke Bihariji ka mandir in Raj garh. Apparently, she adopted a child from Jagadishpur Riyasat but died mysteriously within 24 hours of the adoption. According to British law, the Riyasat was the new ruler, but Sir Keshav Prasad Singh, a member of the Maharaja's family alleged that the adoption was false and claimed the throne for himself. The adoption was never verified as the main witness went missing and the other contenders either failed to appear or gave statements in favour of Singh. The court appointed him Steward of Throne. His last grandson, Maharaja Kamal Singh, was a two-time Member of Parliament from Buxar.
In 1947 after independence the "Privy purse" issued to the Maharaja and Dumraon became part of India.
Dumraon is located at  at an average elevation of 61 metres (200 feet)..
As of 2001[update] India census, Dumraon had a population of 45,796. Males constitute 53% of the population. Dumraon has an average literacy rate of 54%, lower than the national average of 59.5%: male literacy is 64% and, female literacy is 43%. In Dumraon, 17% of the population is under 6 years of age.
|"District Census Handbook Part A - Buxar" (PDF). Census of India. p. 731.|
Colleges include VKS College of Agriculture (BAU, Sabour, Bhagalpur), D.K. college, S.M. Women's college, Inter college and C.P.S.S. Inter College.
Government High schools include Raj High School, C.P.S.S High School, M.C. High School, Maharani Usha Rani High School, G.H. Urdu High School and Madarsa Fakariya Samsulolum. Some good private schools are Rose public school, Bihar Public School, St. Paul's International School, Cambridge, DAV Public School.
The town is served by Dumraon Raj Hospital, Dr. Raghuveer Singh Chikitsalaya, Hari Prem Chikitsalya, Bihari Sharan Singh Hospital and Block (Gov.) Hospital, Sub divisional Hospital.
The Former Princely State also finds mention and is the setting for the 2nd half of the popular novel Half Girlfriend by Chetan Bhagat where the protagonist is the Prince of the former Princely state.
- Other than three general railway ticket counter one more ticket counter is placed in Gupta market, Dumraon(DURE).
- Falling Rain Genomics, Inc - Dumraon
- "Census of India 2001: Data from the 2001 Census, including cities, villages and towns (Provisional)". Census Commission of India. Archived from the original on 2004-06-16. Retrieved 2008-11-01.
- Train list