Rajnagar is a village in the Raghunathganj I CD block in the Jangipur subdivision of Murshidabad district in the state of West Bengal, India.

The subdivision is located in the Rarh region that is spread over from adjoining Santhal Pargana division of Jharkhand.

[3] Murshidabad district shares with Bangladesh a porous international border which is notoriously crime prone (partly shown in this map).

[5][6] According to a 2016 report, there are around 1,000,000 (1 million/ ten lakh) workers engaged in the beedi industry in Jangipur subdivision.

[12] Raghunathganj I CD block is one of the areas of Murshidabad district where ground water is affected by a high level of arsenic contamination.