I am trying to gather the total population of Pittsburgh and overlay it onto a Google Map. I took the Census Tract .shp files from http://www.census.gov/geo/maps-data/data/gazetteer2010.html and put them in a fusion table and then ran the census API for total population
Then I took that information and uploaded it into another google Fusion table and linked the tract information letting me pull in the population numbers and link it to the kml data.
I have my outcome hung here http://codepen.io/fpcond/pen/IvJDA?editors=101
My question is: How accurate is this? I ask because when I click on the polygons some of the population numbers seem really low for the size of the area.