--A plague like that could hardly dent their fabulous demografic dividends.I'm not sure if the hindu gov data below refer to mid-yr or end-of-yr figure. The 2 most populous hindu states in 2020 have a combined popn of something around 370 million. The official areas of these 2 hindu states:Uttar Pradesh 243,290 sq km and Bihar 94,163 sq km. One can compare them to Bangldesh's 2018 popn of 161 millions and area of 147,570 sq km

--Post-partition Hindustan popn has more than quadrupled from 1947 to 2020.

--Another interesting difference with Guangdong the chinese province with the largest popn(113.46 million in 2018, area 179,800 sq km):those 2 hindu states are landlocked and poor while much of the recent Guangdong popn increase has to do with migrants from other province because of the economic bloom there.

http://statisticstimes.com/demographics/population-of-indian-states.php