Take your pugs to my Veterinarian down here in Springfield, Missouri. He trims nails for free if he is you're regular Vet. Pat's Crew, Littlegirl and Lola's Mum like this.
From Wikipedia, the free encyclopedia. A census tract, census area, census district or meshblock is a geographic region defined for the purpose of taking a census. Usually these coincide with the limits of cities, towns or other administrative areas and several tracts commonly exist within a county.
Land_area and water_area are available for census tracts, at least when you query census.gov. Can I suggest, though, that what you really want to do is a dot density map by census tracts. Not only is this much more understandable than a quantile choropleth map, but you don't need to have the land area for tracts.