I just received this form some of Census Bureau sources. I have not read it yet but you can bet that I will be bugging the MPO and state DOTs to make sure that they hook up with their State Data Centers and get involved in the process. --------------------- The Census Bureau published final criteria for Public Use Microdata Areas (PUMAs) on July 5, 2011. The notice, "Final Public Use Microdata Area (PUMA) Criteria and Guidelines for the 2010 Census and the American Community Survey," is available on the Census Bureau's website at: http://www.census.gov/geo/puma/puma2010.html. Questions and requests for further information should be addressed to the Geographic Standards and Criteria Branch, Geography Division, Census Bureau via e-mail at <geo.puma(a)census.gov> or telephone at 301-763-3056. -- Ed Christopher FHWA Resource Center Planning Team 4749 Lincoln Mall Drive, Suite 600 Matteson, IL 60443 708-283-3534 (V) 708-574-8131 (C)