Situated in the extreme east of Sikkim, Rhenock witnessed the establishment of the first police outpost in the state.

Middle of 16th century the Bhutias, migrated from Tibet settled in the villages presently known as Kyongsa, Aritar, Tarpin, Reshi and Chalisey.

The people who settled were Gorkha ethnic groups such as Newars, Bahuns (Adhikari, Poudyal, Gautam, Dahal, Bhandari, Pokhrel and Achaarja), Chhetri (Subedi, Khatiwada & Bista), Gurung, Rai and Limbu.

Rhenock is inhabited by people of different ethnic groups such as Lepchas, Bhutias, Nepalis (Gorkhas), Kiratis, Biharis and Marwaris.

Direct Taxi services access Gangtok, Pakyong, Kalimpong, Pedong, Algarah, Labha, Rongli, Rangpo, Singtam, Ranipool, Rorathang, Panitanki, and Siliguri.

As Rhenock lies very close to the border between Sikkim and Kalimpong district of North Bengal, so it is also the very important town for the villages of Kalimpong district like Lingsay, Chuba, Beech Kagay, Gendung, Bendha, Pavak, Kataray, Jhusing, Jogi Bhir, Mudung, Pithamchin, Mulkharka, Fusrey, Tagathan, Kashing, Lunchu, Khimsithang, Ladam, Deorali Kagey, Hatticharay, Dabaipani etc.

Rhenock now has the following educational institutions: Pangulakha Wild Life Sanctuary (covered from Chandney to Bhutan border) Lampokhari Lake, Mangkhim, Hattey pahile.