It is one of the municipalities, which could be formed after the re-establishment of multiparty democracy in 1991 A.D.[3] At the time of the 2011 Nepal census, it had a population of 70,335 people living in 18,339 individual households.

[4] Many scriptures including Himwat khanda of Skanda purana mentions that Sage Vedavyasha was born in an island nearby confluence of two Gandaki rivers, (माद्रिका शुक्लगण्डक्यो:संगमे) which lies in a present day Damauli city of Tanahun district in Nepal.

Of these, 64.7% spoke Nepali, 14.7% Magar, 6.6% Gurung, 4.7% Newar, 4.6% Darai, 1.0% Urdu, 0.8% Bote, 0.6% Bhojpuri, 0.5% Tamang, 0.4% Dura, 0.3% Maithili, 0.2% Chepang, 0.2% Hindi, 0.1% Bhujel, 0.1% Kumhali, 0.1% Rai, 0.1% Tharu and 0.1% other languages as their first language.

[7] In terms of ethnicity/caste, 20.1% were Magar, 15.4% Hill Brahmin, 13.1% Chhetri, 8.5% Gurung, 8.1% Newar, 7.9% Kami, 4.9% Darai, 4.2% Sarki, 3.7% Damai/Dholi, 2.2% Gharti/Bhujel, 2.0% Kumal, 1.9% Musalman, 1.9% Thakuri, 1.2% Bote, 1.1% Dura, 1.0% Sanyasi/Dasnami, 0.7% Tamang, 0.3% Chepang/Praja, 0.3% Rai, 0.2% Badi, 0.2% other Dalit, 0.1% Kathabaniyan, 0.1% Teli, 0.1% Tharu, 0.1% Yadav and 0.2% others.

[citation needed] Vyas lies on Prithvi Rajmarg, a highway from Kathmandu to Pokhara.