It is the second biggest municipality after Bharatpur Metropolitan City that was formed in 1997 through the merger of the former Village Development Committees Old-Ratnanagar and Panchakanya.

Agricultural products produced from Ratnanagar includes rice, maize, mustard and vegetables.

[3] Sauraha that lies in Ratnanagar's vicinity is a touristic hub with many hotels, resorts and shops, as it borders Chitwan National Park.

Of these, 70.2% spoke Nepali, 16.6% Tharu, 3.9% Tamang, 2.6% Bhojpuri, 1.6% Newar, 1.2% Darai, 0.9% Gurung, 0.7% Magar, 0.7% Hindi, 0.6% Maithili, 0.3% Chepang, 0.1% Urdu, 0.1% Bote, 0.1% Rai, 0.1% Kumal and 0.1% other languages as their first language.

[5] In terms of ethnicity/caste, 33.1% were Hill Brahmin, 17.7% Tharu, 12.4% Chhetri, 6.7% Tamang, 6.4% Newar, 3.4% Kami, 2.9% Gurung, 2.9% Magar, 2.5% Musalman, 1.7% Damai/Dholi, 1.4% Sarki, 1.3% Darai, 1.2% Kumal, 1.1% Sanyasi/Dasnami, 0.7% Gharti/Bhujel, 0.5% Chepang, 0.5% Thakuri, 0.4% Kalwar, 0.3% Musahar, 0.3% Rai, 0.2% Badi, 0.2% Bote, 0.2% Teli, 0.1% Hajam/Thakur, 0.1% Kanu, 0.1% Majhi, 0.1% Mali, 0.1% Mallaha, 0.1% Terai Brahmin, 0.1% Kurmi, 0.1% Dusadh/Pasawan/Pasi, 0.1% Koiri/Kushwaha, 0.1% Sunuwar, 0.1% Halwai, 0.1% Kathabaniyan, 0.1% other Dalit, 0.1% Yadav and 0.1% others.