Ok so as far as my understanding goes the most high resolution dataset available that factors in many other things (other than Census data ) at a 1X1 km resolution is Landscan data created by Oak ridge National Laboratory (ORNL). But, these are not available freely. What is the closest alternative you know of?
I am planning to use US Census Tiger data for 2010 and the lowest resolution it provides is of Census Tracts which are variable in their size (see here).
Can anyone suggest me any other alternative (transformed) datasets ?