How you can evaluate what the proposed Census Bureau criteria on Urbanized Areas means for your area. For explanation purposes, we used Danville, IL as an example. Tract, Block group, and block fields from the geographic header file.
Total population counts from the data files.
A polygon layer containing National Parks, Monuments, and Military installations. Evaluation and Selection process Find potential geographic units. If no BGs of 1000 ppsm density are available, use blocks of 1000 ppsm to create the cores. Note that many cores can be simultaneously formed. Those blocks that connect to the core.