US Census Spatial and Demographic Data in R: The UScensus2000 Suite of Packages by Zack W. Almquist

“…The UScensus2000 suite is comprised of spatial and demographic data for the 50 states and Washington DC at four different geographic levels (block, block group, tract, and census designated place). The UScensus2000 suite also contains a number of functions for selecting and aggregating specific geographies or demographic information such as metropolitan statistical areas, counties, etc. …”
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The tree cover and temperature disparity in US urbanized areas: Quantifying the association with income across 5,723 communities. by Robert I McDonald, Tanushree Biswas, Cedilla Sachar, Ian Housman, Timothy M Boucher, Deborah Balk, David Nowak, Erica Spotswood, Charlotte K Stanley, Stefan Leyk

“…Here, we use National Agriculture Imagery Program digital ortho photographs to survey the tree cover inequality for Census blocks in US large urbanized areas, home to 167 million people across 5,723 municipalities and other Census-designated places. We compared tree cover to summer land surface temperature, as measured using Landsat imagery. …”
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