Physiographically, this area forms the Kalimpong Range, with the average elevation varying from 300 to 3,000 metres (980 to 9,840 ft).

This region is characterized by abruptly rising hills and numerous small streams.

While Kalimpong is the only municipality, Dungra is the sole census town in the entire area.

[5][6] While the first degree college in the subdivision was established at Kalimpong in 1962[7] the entire subdivision (and now the entire district), other than the head-quarters, had to wait till as late as 2015 (more than half a century) to have their first degree colleges at Pedong and Gorubathan.

According to the 2011 Census of India, Nimbong Khasmahal had a total population of 2,659 of which 1,368 (51%) were males and 1,291 (49%) were females.