Lachung has friendly locals. The most resident communities of Lachung belong to the Lepcha or the Bhutia community. The Bhutias are of Tibetan descent. The locals here are referred to as Lachungpas and extremely warm and welcoming as tourism is a major industry around these parts. The languages spoken here are mainly Nepali, Bhutia and Lepcha. Also, there are a number of festivals celebrated here.

If you visit Lachung during the festival time, tourists will be mesmerised by the colorful treat they will have for their eyes.