Its population grew by 17.64 % during 2001 -- 2011 , compared to 21.54 % growth in the previous decade ( 1991 -- 2001 ) .
With 1,210,193,422 residents reported in the 2011 provisional census report , India is the world 's second-most populous country .
India 's population grew by 17.64 % during 2001 -- 2011 , compared to 21.54 % growth in the previous decade ( 1991 -- 2001 ) .
With 1,210,193,422 residents reported in the 2011 provisional census report , India is the world 's second-most populous country .