arunachal pradesh... this is according to the book which i m reading now..
kerala
Arunachal pradesh
In terms of density Arunachal Pradesh has the least density with 13 persons per sq.km.
Arunacal pradesh
uttar pradesh
north eastern states
Sikkim is the least populated state in India, with a population of 607,688 people. India has 28 states and a total population of 1.21 billion people.
Andaman n Nicobar islands
Jammu and Kashmir is a state in India; the population density is not so low for a region in the mountains - 56/km2.
up Per the 2009 census, it would be Uttar Pradesh
bihar 1102 west bengal 1029
Yes, there are about 310 persons per square mile.