Dumka (दुमका) is a city and district in the Indian state of Jharkhand. It was made the headquarters of the Santhal Pargana region, which was carved out of the Bhagalpur and Suri districts after the Santal Hool of 1855. Dumka is the sub-capital of the state of Jharkhand, which was carved out of the southern part of Bihar on 15 November 2000.
Origin of name
There are two theories on how Dumka got its name. The first one suggests that Dumka's name derives from the Santali word sumk for "shunted" or "small," because during the British Raj, it was a small town compared to Suri and Bhagalpur.
The other is that Dumka derives its name from the Persian word damin-i-koh, which means 'skirts (an edge, border or extreme part) of the hills'. The Mughals assigned this name to the town and its vicinity on account of the presence of hillocks and undulating terrain.
Dumka is located at 24.27°N 87.25°E